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INSTRUCTION MANUAL
COMPU-VISION
CV-5000
CV-5000
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INTRODUCTION
This symbol is applicable for EU member countries only.
To avoid potential negative consequences for the environment and possibly human
health, this instrument should be disposed of (i) for EU member countries - in
accordance with WEEE (Directive on Waste Electrical and Electronic Equipment),
or (ii) for all other countries, in accordance with local disposal and recycling laws.
Thank you for purchasing the TOPCON Compu-Vision CV-5000.
This instrument is used to measure refractive power of eyes and to test the binocular functions.
There are two types in the CV-5000 model. One is CV-5000, in which you can perform the
prism refractive power test and cross cylinder (Auto Cross) test. The other is CV-5000 Lite,
in which you cannot perform these tests.
This instrument has the following features:
• The compact design enables you to see the patient's face.
• The target can be controlled by the controller for the main unit.
• The PD and the anterior eye alignment can be checked even in a dark optometry room.
This instruction manual outlines the Compu-Vision CV-5000, including the basic operation,
trouble shooting, maintenance and cleaning.
To ensure the best use of the instrument (safely and efficiently), carefully read "DISPLAY FOR
SAFE USE" and "SAFETY CAUTIONS" and then use the instrument correctly.
Keep the instruction manual at hand for future reference.
[Warning]
Be careful not to bump the patient’s eyes or nose with the instrument during
operation.
[The patient may be injured.]
CAUTIONS FOR USE
Basic caution
When moving the instrument up and down or turning it, be careful not to bump it against the
patient's face.
[The patient may be injured.] Handle the CV-5000 using the top covers above the lens banks.
Do not open the covers. Ask the serviceman to repair the instrument.
[Injury may be caused by electric shock.]
Turn off the power switch and unplug the power cord first. Then, replace the fuse with the rated
one.
[Injury or fire may be caused by electric shock.]
Disposal
Dispose of the instrument according to local disposal and recycling laws.
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ENVIRONMENTAL CONDITIONS FOR USE
Temperature : 10°C - 40°C
Humidity : 30% - 90% (non-condensing)
Air pressure : 700hPa - 1060hPa
STORING PLACE, USAGE PERIOD AND OTHERS
1. Environmental conditions for installation (without package)
* Temperature : 10°C - 40°C
Humidity : 10% - 95% (non-condensing)
Air pressure : 700hPa - 1060hPa
* THIS INSTRUMENT DOES NOT MEET THE TEMPERATURE REQUIREMENTS OF
ISO 15004-1 FOR STORAGE. DO NOT STORE THIS INSTRUMENT IN CONDITIONS
WHERE THE TEMPERATURE MAY RISE ABOVE 40°C OR FALL BELOW 10°C.
2. When storing the instrument, ensure that the following conditions are met:
(1) The instrument should not be splashed with water.
(2) Store the instrument away from the environment where air pressure, temperature,
humidity, ventilation, sunlight, dust, salty/sulfurous air, etc. could cause damage.
(3) Do not store or transport the instrument on a slope or uneven surface or in an area
where it is subject to vibrations or instability.
(4) Do not store the instrument where chemicals are stored or gas is generated.
3. Usage period
8 years from delivery providing regular maintenance is performed (according to the self-certification [Topcon data])
ENVIRONMENTAL CONDITIONS FOR PACKAGING IN STORAGE
Temperature : -20°C - 50°C
Humidity : 10% - 95%
ENVIRONMENTAL CONDITIONS FOR PACKAGING IN TRANSPORTATION
Temperature : -40°C - 70°C
Humidity : 10% - 95%
CHECKPOINTS FOR MAINTENANCE
Maintenance by user
1. Regularly maintain and check the instrument and its parts.
2. When using the instrument after a prolonged period of inactivity, confirm normal and safe
operation beforehand.
3. When the lens is stained, wipe it with the accessory silicone cloth.
4. When this instrument is not in use, apply the dust cover to it.
5. Refer to "MAINTENANCE" on page 43 for details.
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DISPLAY FOR SAFE USE
To encourage safe and proper use and to prevent danger to the operator and others or potential
damage to property, important cautionary messages are placed on the instrument body and
inserted in the instruction manual.
We suggest that everyone using the instrument understands the meaning of the following displays, icons and text before reading the "SAFETY CAUTIONS" and observe all listed instructions.
DISPLAYS
Display Meaning
ICONS
WARNING
CAUTION
• Injury refers to cuts, bruises, burns, electric shock, etc. which do not require hospitalization or extended medical treatment.
• Physical damage refers to extensive damage to the building, nearby equipment and/
or surrounding furniture.
Icon Meaning
Incorrect handling by ignoring this display may lead to a risk of
death or serious injury.
Incorrect handling by ignoring this display may lead to personal
injury or physical damage.
Prohibition:
Specific content is expressed with words or a picture near the
icon.
Mandatory Action:
Specific content is expressed with words or a picture near the
icon.
Caution:
Specific content is expressed with words or a picture near the
icon.
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SAFETY CAUTIONS
Icon Prevention item Page
WARNING
To avoid electric shock, do not attempt disassembling, rebuilding
and/or repairs on your own. Ask your dealer for repairs.
To avoid fire and electric shock, install the instrument in a place
free of water and other liquids.
To avoid fire and electric shock, do not put cups or vessels containing liquids near the instrument.
To avoid electric shock, do not insert metal objects into any clearances, etc.
To avoid fire and electric shock in case of leakage, connect the
power plug to a 3-plug AC outlet with proper grounding.
To avoid electric shock, be sure to remove the power cable from
the instrument body before removing the fuse cover for replacement. Also, do not connect the power cable to the instrument
body with the fuse cover left unfixed.
To avoid fire in the event of an instrument malfunction, use a properly rated fuse.
33
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44
44
4
To avoid fire in the event of an instrument malfunction, immediately turn off the power switch and unplug the cable if you see
smoke coming from the instrument or if you detect other problems.
Ask your dealer for repairs.
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CAUTION
Icon Prevention item Page
To prevent the instrument from tipping over or falling and to avoid
injury, do not install the instrument on an uneven or unsteady surface, including a slope.
To avoid electric shock, do not handle the plugs with wet fingers. ----
To avoid the damaged instrument or an injury caused by electric
shock, turn off the power switch and unplug the power cord before
cleaning the instrument.
When tilting the head for the near-point test, place the instrument
away from the patient to prevent him/her from being injured by colliding against it.
Do not tilt the head for the near-point test while the near-point rod
is inclined. The near-point rod may hit the instrument or desk to
damage the instrument.
Do not put your hand between the arm and the instrument. Your
hand may be pinched to cause injury.
To avoid injury due to contact, do not bring the face close to the
near-point rod.
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16, 18,
31
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15, 18,
31
This instrument has been tested (with 120V/230V) and found to
comply with IEC60601-1-2 Ed.3.0: 2007.
This instrument radiates radio frequency energy within standard
and may affect other devices in the vicinity.
If you have discovered that turning on/off the instrument affects
other devices, we recommend you change its position, keep a
proper distance from other devices, or plug it into a different outlet.
Please consult the dealer from whom you purchased the instrument if you have any additional questions.
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USAGE AND MAINTENANCE
USAGE
The CV-5000 Compu-Vision is an electric instrument. Use this instrument according to the
instruction manual.
USER MAINTENANCE
To ensure the safety and performance of this instrument, all maintenance work, unless
specified in this manual, shall be conducted by trained service engineers.
The following maintenance task may be done by the user.
For details, see the relevant part of this manual.
Replacing the face shield/forehead rest
The forehead rest and face shield on this instrument may be replaced by the user. Refer to
"INSTALLING THE FACE SHIELD AND FOREHEAD REST" on page 15 for handling them.
Replacing the fuse
The fuses on this instrument may be replaced by the user. For details, refer to "REPLACING THE FUSE" on page 44.
Inspecting the instrument
It is recommended to inspect the mounting section for the CV-5000 and the system table
about its looseness periodically. Refer to "INSPECTING THE OPTOMETRY UNIT
MOUNTING SECTION" on page 46 for details.
ESCAPE CLAUSE
• TOPCON shall not take any responsibility for damage due to fire, earthquakes, actions
by third persons and other accidents, or damage due to negligence and misuse by the
user and any use under unusual conditions.
• TOPCON shall not take any responsibility for damage derived from inability to properly
use this instrument, such as loss of business profit and suspension of business.
• TOPCON shall not take any responsibility for damage caused from using this instrument in a manner other than that described in this instruction manual.
• Diagnoses made shall be the responsibility of pertaining doctors and TOPCON shall
not take any responsibility for the results of such diagnoses.
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WARNING DISPLAYS AND POSITIONS
USB USB
KB
COM CL RM
CV
ACP/MCMC(SERIAL)
CAUTION
To avoid injury due to contact,
do not bring the face close to the
near-point rod.
CAUTION
Do not put your hand between the
arm and the instrument. Your hand
may be pinched to cause injury.
NOTICE
CAUTION
Do not open the covers. Ask the
serviceman to repair the unit.
Injury may be caused by electric
shock.
CAUTION
Turn off the power switch and
unplug the power cord first.
Then, replace the fuse with the
rated one.
To ensure safety, the machine provides warning displays.
Use the instrument correctly by observing the display instructions. If any of the following display
labels are missing, contact your TOPCON dealer or your local Topcon office listed on the back
cover of this manual.
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CONTENTS
INTRODUCTION ..................................................................................................................1
CAUTIONS FOR USE .......................................................................................................... 1
ENVIRONMENTAL CONDITIONS FOR USE....................................................................... 2
STORING PLACE, USAGE PERIOD AND OTHERS ...........................................................2
ENVIRONMENTAL CONDITIONS FOR PACKAGING IN STORAGE.................................. 2
ENVIRONMENTAL CONDITIONS FOR PACKAGING IN TRANSPORTATION................... 2
CHECKPOINTS FOR MAINTENANCE ................................................................................ 2
DISPLAY FOR SAFE USE....................................................................................................3
SAFETY CAUTIONS ............................................................................................................ 4
USAGE AND MAINTENANCE.............................................................................................. 6
USAGE .................................................................................................................................6
USER MAINTENANCE......................................................................................................... 6
ESCAPE CLAUSE ................................................................................................................ 6
WARNING DISPLAYS AND POSITIONS .............................................................................7
COMPONENT NAMES AND FUNCTIONS..................................................................... 10
MAIN UNIT.......................................................................................................................... 10
CV POWER SUPPLY UNIT................................................................................................ 11
COMPOSITION OF PARTS WHICH CONTACT THE HUMAN BODY............................... 11
STANDARD ACCESSORIES ............................................................................................. 12
OPTIONAL ACCESSORIES ............................................................................................... 14
SYSTEM CONFIGURATION ..............................................................................................14
PREPARATIONS..................................................................................................................... 15
ASSEMBLY/INSTALLATION OF NEAR-POINT ROD AND NEAR-POINT CARD.............. 15
INSTALLING THE FACE SHIELD AND FOREHEAD REST............................................... 15
LEVEL ADJUSTMENT........................................................................................................ 16
FIXING THE TILTED HEAD................................................................................................ 16
NEAR-POINT CARD........................................................................................................... 18
OPERATING THE INSTRUMENT ...................................................................................... 19
MEASUREMENT SCREEN (Example: KB-50)................................................................... 20
OUTPUT OF PRINTER ...................................................................................................... 21
OPTOMETRY ...........................................................................................................................24
OPTOMETRY BY FOGGING METHOD ............................................................................. 25
ACCURATE MEASUREMENT OF THE ASTIGMATIC AXIS AND ASTIGMATIC
POWER (WHEN USING THE CROSS CYLINDER) .......................................................... 26
ACCURATE MEASUREMENT OF THE SPHERICAL POWER (RED-GREEN TEST) ...... 27
BINOCULAR BALANCE TEST ........................................................................................... 28
MEASURING PHORIA (FAR-POINT).................................................................................29
SUMMING UP MEASUREMENT RESULTS ......................................................................31
MEASURING PRESBYOPIA ..............................................................................................31
OTHER MEASUREMENTS ................................................................................................32
POWER CONVERSION ..................................................................................................... 32
TROUBLE SHOOTING.......................................................................................................... 33
TROUBLE SHOOTING GUIDE .......................................................................................... 33
SPECIFICATIONS AND PERFORMANCE .....................................................................34
DIMENSIONS AND WEIGHT ............................................................................................. 34
PURPOSE OF USE ............................................................................................................ 34
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OPERATION PRINCIPLE ................................................................................................... 34
ELECTRIC RATING............................................................................................................ 34
ELECTROMAGNETIC COMPATIBILITY ............................................................................ 35
SYSTEM CLASSIFICATION............................................................................................... 39
REFERENCE MATERIAL.....................................................................................................40
SHAPE OF PLUG ............................................................................................................... 40
SYMBOL ............................................................................................................................. 40
CORNEAL ALIGNING DEVICE .......................................................................................... 41
MAINTENANCE....................................................................................................................... 43
DAILY CHECKUPS ............................................................................................................. 43
ORDERING CONSUMABLES ............................................................................................ 43
REPLACING THE FUSE .................................................................................................... 44
CLEANING.......................................................................................................................... 45
INSPECTING THE OPTOMETRY UNIT MOUNTING SECTION .......................................46
SETTING THE PRINTER PAPER ......................................................................................47
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COMPONENT NAMES AND FUNCTIONS
9
6
13
4
5
3
12
2
1
15
10
8
14
7
11
17
16
MAIN UNIT
(1) Examination window ............... The patient's eyes are observed through this window, and
(2) Corneal aligning window ......... The position of the patient's cornea can be observed
(3) Forehead rest knob................. Adjusts the forehead in the back-and-forth direction.
(4) Leveling knob.......................... Levels the instrument.
(5) Near-point rod holder .............. The near-point rod is inserted and attached here.
(6) Near-point rod clamp screw.... Fixes the near-point rod.
(7) Forehead rest.......................... The patient's forehead rests here.
(8) Cornea alignment scale .......... Measures the cornea vertex position.
(9) Level ....................................... Indicates the standard position for the level adjustment.
(10) Face shield.............................. This cover can be removed.
(11) Cornea illumination ................. Brightens the anterior eye segment to check the PD easily
(12) Near-point illumination ............Brightens the near-point target to see it easily.
(13) Tilt fixing lever ......................... Fixes the tilted head.
(14) Arm mounting shaft ................. Mounts the instrument on the arm, etc.
(15) PD cover ................................. Hold this cover when tilting the head for the near-point test.
(16) Arm ......................................... Used to mount the CV-5000 instrument.
(17) Knob........................................ Fixes the arm when it is installed to the table, etc.
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COMPONENT NAMES AND FUNCTIONS
the display lenses are set here.
through this window.
even during optometry in a dark room.
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CV POWER SUPPLY UNIT
18
20
19
21
USB USB
KB
COM CL RM
CV
ACP/MCMC(SERIAL)
23
22
24
25
29
28
26
27
(18) Connector for connecting KB ..Used to connect the CV 1 Dial Controller.
(19) Cover switch ........................... Opens the printer cover.
(20) Printer cover
(21) Power switch
(22) Connector for connecting KB ..Used to connect the CV 1 Dial Controller.
(23) USB connector........................ Used to connect any USB device such as an external
printer.
(24) COM port connector................ Used to connect a computer.
(25) CL port connector ................... Used to connect a lens meter.
(26) Connector for the CV
instrument ............................... Used to connect the CV instrument.
(27) ACP/MC port connector .......... Provided for the extended optical emitting unit.
(28) MC (SERIAL) .......................... Used to connect the chart device for serial application.
(29) RM port connector .................. Used to connect the auto refractometer.
Connect the device complying with UL60950/UL60950-1, UL60601-1 or IEC60950/
IEC60950-1 to the CV power supply unit and 1 Dial Controller KB-50. Ask the serviceman to connect the device.
COMPOSITION OF PARTS WHICH CONTACT THE HUMAN BODY
Forehead rest: Polypropylene resin (Type B applied part)
Face shield : Polypropylene resin
COMPONENT NAMES AND FUNCTIONS
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STANDARD ACCESSORIES
CV-5000
INSTRUCTION MANUAL
CONPU-VISION
CV-5000
Upon unpacking, make sure that all the following standard accessories are included. Figures
in ( ) are the quantities.
Instruction manual (1) Dust cover (1)
Near-point rod (1) Forehead rest (2)
Face shield (2) Near-point card and card holder (1 each)
Silicone cloth (1) CV power supply unit (1)
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COMPONENT NAMES AND FUNCTIONS
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The standard accessories for the CV power supply unit are shown below.
Fuse (2) Power cord (1)
Fixing metal fixture (1) Printer paper (2)
CV connection cable (1) Screw (4)
Printer shaft (1)
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COMPONENT NAMES AND FUNCTIONS
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OPTIONAL ACCESSORIES
• CV 1 Dial Controller KB-10
Controls the operation of the Compu-Vision CV-5000 when combined with it.
• CV 1 Dial Controller KB-50 Only in CV-5000
Controls the operation of the Compu-Vision CV-5000 when combined with it.
KB-10 is not available in some regions.
• Cables for input, output, MC-3 (for serial application) and for connecting two or more
instruments
Used to connect the auto refractometer, lens meter and the visual acuity test device (for
serial application) and to connect two or more instruments.
* Ask the serviceman to connect the devices.
• Wireless connection device
Used to perform the wireless serial communication. It is possible to connect the refractometer or lens meter without wires.
* Ask the serviceman to connect the devices.
• Connector for the extended optical emitting unit
Used to connect the extended optical emitting unit for the target setting device.
• Connector for the CV instrument
Used to connect the CV instrument with the CV power supply unit.
SYSTEM CONFIGURATION
Connect the device complying with UL60950/UL60950-1, UL60601-1 or IEC60950/
IEC60950-1 to the CV power supply unit and 1 Dial Controller KB-50. Ask the serviceman to connect the device.
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COMPONENT NAMES AND FUNCTIONS
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PREPARATIONS
Near-point rod
Near-point card
ASSEMBLY/INSTALLATION OF NEAR-POINT ROD AND NEAR-POINT CARD
Insert the near-point card into the end of the near-point rod. The near-point card is designed to
slide on the near-point rod.
Insert the near-point rod into its holder and tighten the clamp screw securely. When the nearpoint rod is not in use, set it upright. (Tighten the clamp screw securely.)
CAUTION
NOTICE
NOTICE
To avoid injury due to contact, do not bring the face close to the nearpoint rod.
The near-point card must be bent in the set direction. Do not bend it
forcedly in the opposite direction. The near-point card may be broken.
Install the near-point card to the near-point rod according to the seal,
which is adhered on the card to show its installation direction.
Install the near-point card toward the CV instrument in the direction where it can be bent.
INSTALLING THE FACE SHIELD AND FOREHEAD REST
The face shield is fixed by putting it on the face shield magnet properly.
To remove the forehead rest, as viewing from its side, pull it upward.
To mount the forehead rest, carry out the removing procedure reversely.
PREPARATIONS
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LEVEL ADJUSTMENT
Level
Leveling knob
Before using the instrument, check if it is horizontal, using the level. If there are not bubbles
between two red lines, turn the leveling knob to make the instrument horizontal.
FIXING THE TILTED HEAD
By tilting the head in the near-point test, the instrument can be set in the proper position for the
real near-point test.
NOTICE
CAUTION
CAUTION
To tilt the head, loosen the tilt fixing lever of the instrument.
Hold the PD unit when moving the head.
Do not tilt the head for the near-point test while the near-point rod is
inclined. The near-point rod may hit the instrument or desk to damage the instrument.
When tilting the head for the near-point test, place the instrument
away from the patient to prevent him/her from being injured by colliding against it.
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PREPARATIONS
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NOTICE
Do not rotate the instrument while the tilt fixing lever is loosened. The
tilt fixing lever may hit the mounting arm to damage the instrument.
CAUTION
When the head is tilted to a desired angle, fix the lever.
The tilt fixing lever is a serration type. If the tilt fixing lever hits the instrument or the
mounting arm while it is loosened, adjust its position.
Do not put your hand between the arm and the instrument. Your hand
may be pinched to cause injury.
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PREPARATIONS
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NEAR-POINT CARD
When the patient wears the multi-focal lenses, measure the eyeglass refractive power at near
distance. For installing the near-point rod and near-point card, refer to "ASSEMBLY/INSTALLATION OF NEAR-POINT ROD AND NEAR-POINT CARD".
Incline the near-point rod until it stops. If the near-point rod is almost horizontal, the position is
the measuring position.
CAUTION
CAUTION
NOTICE
The scale of the near-point rod is graduated by the "cm" unit (15 ~ 70).
Values matching both end lines of the card holder indicate the distance between the eye and
the card.
Set the desired target on the near-point card attached to the card holder.
To set the target, turn the rotary part at the bottom of the card by your fingers. The target
appears in the sight window.
Target numbers of the near-point card and the contents are shown below.
(1) 40cm target VA 20/50-20/20
(2) Target for presbyopia
(3) Target for horizontal line
(4) Target for horizontal line (40cm target VA 20/20)
(5) Target for presbyopia (thin lines)
(6) 40cm target VA 20/200-20/60
(7) Target for astigmatism
(8) 40cm for VA 20/20
(9) Target for vertical line
(10) 67cm target VA 20/200-20/20
To avoid injury due to contact, do not bring the face close to the nearpoint rod.
Do not tilt the head for the near-point test while the near-point rod is
inclined. The near-point rod may hit the instrument or desk to damage the instrument.
The near-point card must be bent in the set direction. Do not bend it
forcedly in the opposite direction. The near-point card may be broken.
Target name on the patient side
When you stop turning the rotary part of the card at the position displayed as "Astigmatic
chart", the patient sees the target for astigmatism (astigmatic chart). (The target for astigmatism (astigmatic chart) is displayed in the sight window at the back side.)
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PREPARATIONS
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OPERATING THE INSTRUMENT
1 Press the main switch on the CV power supply. The instrument is reset.
2 Perform the objective measurement by an auto refractometer and set the measurement
data in the instrument. In this case, optometry by fogging method and others can be omit-
ted. So, the examination time can be effectively shortened.
3 Let the patient sit at the optometry table.
4 Press either the table up/down switch or electric chair up/down switch to adjust the instru-
ment to the patient's posture.
5 Operate the lock switch or lock lever of the vision arm to unlock and move the instrument
to the patient's position.
Operate its lock switch or lock lever again to fix the vision arm.
6 Set the previously measured PD (interpupillary distance) in the instrument.
7 Let the patient place his/her forehead on the forehead rest.
8 Looking at the level, turn the leveling knob to bring the bubbles between the two lines.
9 Set the distance between the cornea vertex and instrument. (For adjusting the distance
between the cornea vertexes, refer to "CORNEAL ALIGNING DEVICE" on page 41.)
10 When you want to measure the right eye first, press "right eye" and occlude the left eye.
For assembling the optometry table or for connecting this instrument to other models, refer to
the instruction manual of each model.
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PREPARATIONS
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MEASUREMENT SCREEN
(1)
(3)
(4)
(7)
(5)
(6)
(2)
(3)
(Example: KB-50)
(1) Displays the type of the displayed main data, the test name, the time, the lapse of test time,
etc.
(2) Displays the data set in the CV-5000 instrument, displays the set visual acuity, etc. Only
the astigmatic axis is displayed by steps in ( ).
(3) When you want to compare the main data with the objective data or lens data measured by
an external device, those data sets are displayed in small areas near the main data. One
of those data sets are fixed, and the other is used for exchanging with the main data or displaying.
(4) Displays a simple guide about the current test.
(5) Displays the dial information about the current test.
(6) Displays the auxiliary lens set in the CV-5000 instrument. When you select the astigmatic
lens or cross cylinder, you can check the lens axis status. The PD value set in the CV5000 instrument is displayed.
(7) On KB-50, you can operate the device not only by keyboard but also by touching the
screen directly. The touching operation is possible on the lower half of the screen.
You can access a variety of functions such as step numbers, etc. with the function buttons.
Refer to the instruction manual of the CV 1 dial controller KB-50 for details.
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PREPARATIONS
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OUTPUT OF PRINTER
ID number
Column for name
Date and time of measurement
Distance between cornea vertexes
Uncorrected visual acuity
Uncorrected visual acuity for far point
Uncorrected visual acuity for near point
Input data of auto refractometer
Input data of keratometer
Input eyeglass data
Visual acuity measured by setting the eyeglass
Near-point addition refractive power data of
Near-point visual acuity measured by setting
data
eyeglasses
the eyeglass data
Test time
Press [PRINT] in KB-50 (only in CV-5000) and [PRT] in KB-10, and the data are printed.
* The unmeasured data are not printed.
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PREPARATIONS
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Data input from database
Visual acuity measured last, which was
Addition refractive power data, which was
Near-point visual acuity, which was input
Far-point phoria data, which was input from
Near-point phoria data, which was input
Final correction data
Visual acuity in final correction data
Near-point addition refractive power data
Near-point visual acuity
Far-point phoria data in final correction data
Near-point phoria data in final correction data
input from database
input from database
from database
database
from database
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PREPARATIONS
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Prescription data
Near-point addition refractive power data in
Near-point visual acuity in prescription data
Far-point phoria data in prescription data
Near-point phoria data in prescription data
Result of binocular function test
Result of stereoscopic vision test
Result of Worth 4 dots test
Far-point interpupillary distance
Near-point interpupillary distance
prescription data
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PREPARATIONS
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OPTOMETRY
This chapter will describe an example of optometry by using CV-5000.
A manual optometry procedure, without using the optometry program, will be described.
Before examining the patient's eye with this instrument, it is necessary to check the current
visual acuity, history, PD and convergence near point of the patient's eye and perform the
occlusion test, and besides, the knowledge of optometry is required to make the best use of the
instrument.
For this purpose, refer to professional literature for VISION specialists. For details about the
use of the TOPCON CV 1 Dial Controller and Communication System, refer to each instruction
manual.
Here, a model patient is taken up to describe the procedure clearly.
Mr. A, an adult aged 25 wearing eyeglasses comes to the store. He complains about his insufficient visual acuity.
After we have checked the refractive power of his glasses with the TOPCON lens meter, the
following results are obtained.
PD : 64mm
R : S-1.00D C-0.50D A90°
L : S-1.25D C-0.50D A180°
Interpupillary distance: 64mm
Right eye: Spherical power -1.00D Astigmatic power -0.50D Astigmatic axis 90°
Left eye : Spherical power -1.25D Astigmatic power -0.50D Astigmatic axis 180°
After examining the visual acuity with eyeglasses, the result is 0.7 for both right and left eyes.
By performing preliminary checks, including a verbal diagnosis, it is found that Mr. A has normal visual functions without ocular pathology. Then, measure the optimal refractive power of
the eyeglasses with this instrument.
Be sure to refer to this manual and perform optometry.
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OPTOMETRY
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OPTOMETRY BY FOGGING METHOD
1 For the right eye, add +3.00D to the expected spherical power. Since the current eyeglass
refractive power is -1.00D, the right spherical power is +2.00D.
2 His eyesight fails to almost 0.1. (Adding +3.00D to the spherical power enables to drop his
visual acuity to almost 0.1. In the fogging method, the visual acuity is gradually raised
from this level. It is evaluated as a good method of optometry because the eye is little
affected by accommodation.)
Let Mr. A relax to remove the influence of accommodation.
Next, with the [Spherical power selector dial], reduce the spherical power by -0.25D as
"2.00 → 1.75 → 1.50" until his visual acuity rises to 0.5. Now the spherical power is -1.00.
3 Show him an astigmatic chart and ask how it looks.
Mr. A answers it looks as shown above. Adjust the astigmatic axis of the right eye to be
perpendicular (90°) to the clearly visible line.
If the lines are uniformly unclear to him, it indicates there is no astigmatism. So, it is not
necessary to adjust the astigmatic axis.
4 Change the astigmatic power of the right eye as 0.00 → -0.25 → -0.50 until every line is
uniformly visible. When -0.50 is reached, lines are evenly visible as shown below.
* Astigmatic power is given as minus value because of the fogging method.
5 Change the spherical power by -0.25D until the best visual acuity is obtained, as -1.00 →
-1.25 → -1.50, etc. Note down the visual acuity at each spherical power.
-1.00 0.7 -1.75 1.5
-1.25 0.9 -2.00 1.5
-1.50 1.2 -2.25 1.5
In the case of myopia, the optimal eyeglasses are determined by the lowest refractive
power generating the best visual acuity. Since Mr. A has myopia, his spherical power is
-1.75D. Thus, a general measurement of his right eye is finished.
Next, accurate measurement will be done.
25
OPTOMETRY
Page 28
ACCURATE MEASUREMENT OF THE ASTIGMATIC AXIS AND ASTIGMATIC POWER (WHEN USING THE CROSS CYLINDER)
1 Set the dot chart as the target. The cross cylinder status "1" is set for the right eye (dial
mode A) and the accurate measurement mode of the astigmatic axis is accessed.
2 Press "1" or "2" to reverse the cross cylinder. (As Lens "1" is bordered in green, and Lens
2 in red, the patient can answer with the color.) As the cross cylinder is reversed each time
the switch is pressed, let the patient compare how the chart looks. Stop reversing when
the patient tells the chart is seen better. The screen displays the "+" or "-" status. If it is
"+", add 5° to the astigmatic axis to make it 95° with the [+] switch or dial.
3 Reverse the lens again and let the patient compare how the chart looks. He says the "+"
status is better.
Increase the astigmatic axis by 5° to make it 100°.
4 Reverse the lens again. Mr. A is hesitating to tell which chart surface is seen better. If
judgment is difficult or if each surface of chart looks almost the same, a correct astigmatic
axis is obtained. (The axis is set as 100°.)
5 Next, measure the accurate astigmatic power. Press [C]. The dial operation display is "C"
and the accurate measurement mode of the astigmatic power is accessed. In the cross
cylinder measurement, when changing the astigmatic power by -0.50D, the spherical
power is automatically changed by +0.25D to keep the equivalent spherical power con-
stant.
6 Use the same dot chart. Reverse the cross cylinder as Step 2 and let the patient compare
how the chart looks. Mr. A answers the "-" status is seen better. Increase the astigmatic
power by -0.25D with the [-] switch or dial. (The astigmatic power of Mr. A is -0.75D.)
7 Reverse the lens again and let the patient compare how the chart looks. Mr. A answers
the "+" status is seen better. Decrease the astigmatic power. (The astigmatic power of Mr.
A is -0.50D.)
If his answer is "-", -0.25D should be added.
8 Reverse the lens again. Mr. A answers the "-" status is seen better. The astigmatic power
is to be increased by -0.25D but it makes the astigmatic power 0.75D again.
By the above results, it is judged that -0.50D is not enough and -0.75D is excessive. So,
the accurate astigmatic power is -0.62D. However, such a lens needs to be specially
ordered. In general, the weaker -0.50D is applied.
9 The accurate measurement of the astigmatic axis and astigmatic power is finished.
Remove the cross cylinder.
26
OPTOMETRY
Page 29
ACCURATE MEASUREMENT OF THE SPHERICAL POWER (RED-GREEN TEST)
1 Next, make an accurate measurement of spherical power. Set the red-green chart, and
the spherical movable mode is automatically set.
Ask the patient which side is seen better, red or green.
He answers the green side is seen a little better. Since this means that myopia is a little
strong (or hyperopia is a little weak), increase the spherical power by +0.25D.
2 Ask the patient again which side is more clearly visible. He answers the red side is seen a
little better. This means that myopia is a little weak (or hyperopia is a little strong). -0.25D
is to be added to the spherical power but the condition will return to the original status. This
means that the spherical power of Mr. A lies between -1.50D and -1.75D, namely -1.62D.
Such a lens should be specially ordered. In general, the weaker spherical power for myo-
pia (or stronger spherical power for hyperopia) is applied.
3 The measurement of the right eye is finished. Sum up the lens refractive power. The dis-
played measured values for the right eye are shown below.
Spherical (spherical power) : -1.50
Astigmatism (astigmatic power): -0.50
Axis (astigmatic axis) : 100
The above values are summed up as:
Right eye : S-1.50D C-0.50D A100°
4 Next, measure the left eye. Occlude the right eye and make the left eye uncovered. The
movable mode of the left eye is accessed. In the same way as the right eye, carry out the
procedure from "OPTOMETRY BY FOGGING METHOD" to "ACCURATE MEASURE-
MENT OF THE SPHERICAL POWER (RED-GREEN TEST)".
The values for the left eye of Mr. A are summed up as:
Left eye : S-2.00D C-0.50D A170°
5 The measurement of the right and left eyes is completed. As each eye is measured inde-
pendently, the balance of both eyes will be examined by "binocular balance test".
27
OPTOMETRY
Page 30
BINOCULAR BALANCE TEST
Measurement by using the polarizing filter
1 Set the binocular balance target. Apply the polarizing filters to both eyes and access the
binocular spherical movable mode.
2 Mr. A sees the upper line with the right eye and the lower line with the left eye.
If he can read up to the same place on both lines, the binocular balance is obtained. If not,
add +0.25D to the spherical power of the eye which can see better.
Make sure that the binocular mode is OFF, and add the spherical power to the eye which
can see better.
Left eye of Mr. A:
Left eye : S-1.75D C-0.50D A170°
3 Access the binocular mode and add +1.00D to the spherical powers of both eyes at the
same time with the dial.
At this time, the refractive powers of eyeglasses for Mr. A are as follows.
Right eye : S-0.50D C-0.50D A100°
Left eye : S-0.75D C-0.50D A170°
4 Increase the spherical powers of both eyes by -0.25D at the same time until a desired bin-
ocular visual acuity is obtained. The result is as follows.
Right eye : S-1.25D C-0.50D A100°
Left eye : S-1.50D C-0.50D A170°
5 Make both eyes uncovered.
28
OPTOMETRY
Page 31
MEASURING PHORIA (FAR-POINT)
Measurement by using the polarizing filter Only in CV-5000
1 Set the cross target. Apply the polarizing filters to both eyes and access the binocular
prism movable mode-horizontal (H).
2 If no phoria is found in the patient, four lines are seen as a cross.
If the patient has phoria, the four lines are seen differently.
3 If only the vertical lines are deviated in the right-and-left direction, gradually apply prism to
the left eye with the Prism [BI] or [BO] switch.
4 If only the horizontal lines are deviated in the up-and-down direction, gradually apply prism
to the right eye with the Prism [BU] or [BD] switch.
5 If all the lines are deviated, adjust them horizontally and vertically.
First, apply prism to the left eye with the Prism [BI] or [BO] switch until the vertical lines are
positioned at the center of the horizontal lines. Then, apply prism to the right eye with the
Prism [BU] or [BD] switch until the four lines are a cross.
OPTOMETRY
29
Page 32
Measurement by using Maddox rod and rotary prism Only in CV-5000
Red line
Luminous point
1 Measure horizontal phoria first. Access the binocular mode.
Apply the red horizontal Maddox rod to the right eye with the right auxiliary lens selector
switch, and make the left eye uncovered.
Turn on the fixation target (small dot of light) at the target position. Mr. A sees the red ver-
tical line with the right eye and the luminous point with the left eye. The line and point are
seen as any of the following figures.
Move the luminous point to the right and left with the Prism [BI] or [BO] switch. Tell the
patient to signal when the red line overlaps the luminous point. The quantity of esophoria/
exophoria is shown in the prism value display section of [BI] or [BO].
2 Measure vertical phoria. Access the binocular mode. Apply the red vertical Maddrox rod
to the left eye with the lens selector switch and make the right eye uncovered.
Mr. A sees the red horizontal line with the left eye and the luminous point with the right
.
eye. As Step 1, move the luminous point up and down with the Prism [BU] or [BD] switch.
Tell the patient to signal when the horizontal line overlaps the luminous point. The quantity
of hyperphoria/hypophoria is shown in the prism value display section of [BU] or [BD].
30
OPTOMETRY
Page 33
SUMMING UP MEASUREMENT RESULTS
The visual acuity test of Mr. A is finished. If much phoria is found in phoria measurement, the
visual acuity needs to be corrected with eyeglasses. For the visual acuity of Mr. A, correction is
not necessary.
Therefore, his eyeglasses will be prepared according to the following data:
PD : 64mm
Right eye : S-1.25D C-0.50D A100°
Left eye : S-1.50D C-0.50D A170°
MEASURING PRESBYOPIA
1 This measurement is performed to determine the refractive power of the eyeglasses for
the aged, and is applied to people who generally are 45 years of age and older.
Measure the far-point eyeglasses and set the refractive power to the instrument. Then,
start the measurement.
Bring down the near-point rod, which was set by "ASSEMBLY / INSTALLATION OF NEAR-
POINT ROD AND NEAR-POINT CARD", to the horizontal position.
CAUTION
CAUTION
NOTICE
To avoid injury due to contact, do not bring the face close to the nearpoint rod.
Do not tilt the head for the near-point test while the near-point rod is
inclined. The near-point rod may hit the instrument or desk to damage the instrument.
The near-point card must be bent in the set direction. Do not bend it
forcedly in the opposite direction. The near-point card may be broken.
2 Press the [F/N] switch to make the instrument ready for near-point measurement.
3 Access the binocular mode.
Apply the ±0.50D cross cylinder to both eyes with the auxiliary lens selector switch.
4 Hang the target No. 7 (cross hairs) of the near-point card to face the patient at 40cm apart.
Ask the patient how the vertical and horizontal lines look. If the patient has presbyopia, the
horizontal line is seen clearly and the vertical line looks unclear.
If both lines are seen clearly and evenly, the eyeglasses for add power (near vision) is not
necessary.
5 Using the dial, add 0.25D to the spherical powers of both eyes at the same time toward the
plus region until the vertical line is seen evenly or a little more clearly than the horizontal
line. If the patient is less than 45 year old, decrease by 0.25D. If he/she is the age of 45 or
older, keep the spherical power as it is.
6 Remove the ±0.50D cross cylinder from both eyes with the lens selector switch.
Turn the rotary part of the near-point card and set the target No. (1) or (2). The patient
sees small letters. Let the patient compare how the letters look. Sometimes it is neces-
sary to adjust the spherical power a little. The measurement of presbyopia is finished.
OPTOMETRY
31
Page 34
OTHER MEASUREMENTS
Convergence and divergence Only in CV-5000
To measure convergence of a far point (5m), press the Prism [BO] switch to add prism for
"base out" to both eyes. When a vertical letter target of a visual acuity chart is seen double first
(where diplopia occurs first), record the value. This shows the convergence capacity of both
eyes.
With the rotary prism alone, the convergence of 40
To measure divergence, press the prism [BI] switch to add prism for "base in" to both eyes.
When diplopia occurs at the target first, record the value.
Δ
(approx. 22°) can be measured.
Vertical vergence
To measure vertical vergence for a far point (5m), use the target of a horizontal letter line.
Press the prism [BU] or [BD] switch to add prism to both eyes. When a horizontal letter is seen
double first (where diplopia occurs first), record the value. This means the value of vertical vergence.
Only in CV-5000
POWER CONVERSION
Setting the measurement method by using the convex astigmatic lens
Since TOPCON designs instruments applied to the visual acuity measurement based on the
fogging method, this instrument contains the concave astigmatic lenses. If convex astigmatic
lenses are necessary, press [TRANSPOSE] of the controller. You can perform optometry by
using a convex astigmatic lens.
Power conversion
If the result of the visual acuity measurement based on the fogging method is hyperopic astigmatism, perform power conversion because the astigmatic power of eyeglasses is displayed
as a plus value.
S (spherical power) C (astigmatic power) A (astigmatic axis)
→ S (spherical power + astigmatic power) C (astigmatic power × (-1)) A (astigmatic axis ±90)
This is the power conversion formula. That is,
S : Add the astigmatic lens power to the spherical lens power.
C : Change the symbols (+, -) of the astigmatic lens power.
A : Add 90° when the astigmatic axis is smaller than 90°.
Decrease 90° when the astigmatic axis is larger than 90°.
(Example) When "S" is +3.00D, "C" is -1.00D and "A" is 175°:
S : (+3.00) + (-1.00) = +2.00
C : – (-1.00) = +1.00
A : 175°– 90° = 85°
Therefore, "S" is +2.00D, "C" is +1.00D and A is 85°.
32
OPTOMETRY
Page 35
TROUBLE SHOOTING
TROUBLE SHOOTING GUIDE
WARNING
If a problem has occurred, check the instrument conditions following the check list shown
below.
If the problem is not resolved after following the instructions below, or if there is no relevant
check item in the list, contact Topcon authorized dealer or TOPCON offices at the address
stated on the back cover.
Trouble Condition Remedial measure Page
The instrument is not reset. The power cord plug is not
The lens to be set does not
appear in the examination
window.
A paper comes out but letters are not printed.
Paper does not come out. The paper is used up. Supply paper.
To avoid electric shock, do not attempt disassembling, rebuilding and/
or repairs on your own. Ask your dealer for repairs.
CHECK LIST
Insert the power cord plug
inserted to the outlet.
The controller's connector
comes off.
Any other switch is pressed
except the specified switches
on the controller.
The printer paper is rolled
reversely.
into the outlet securely.
Insert the connector securely. —
Press the specified switch.
Set the printer paper correctly.
—
20
47
47
33
TROUBLE SHOOTING
Page 36
SPECIFICATIONS AND PERFORMANCE
Spherical power
Astigmatic power
Cylinder axis
1)
Prism
Pupillary distance
adjustment range
Cross cylinder
Test lens (Aux lens)
Cornea alignment scale
(on optical axis)
Convergence
Forehead rest
adjustment range
Tightening torque
condition of knob
1) Only in CV-5000
2) The combination of the polarizing filter must be one of the following: 45°/135° and 135°/45° or 45°/135° and circular
polarizing filter.
Measuring range +27.00 ~ -27.00D
Measuring step 0.25D/3.00D
Measuring range +8.00 ~ -8.00D
Measuring step 0.25D/1.00D
Measuring range 0 ~ 180°
Measuring step 1°/5°/15°
Measuring range 0 ~ 20Δ (all direction)
Measuring step 0.1
Adjustment range 48 ~ 80mm
Adjustment step 0.5mm/1.0mm
Jackson Cross cylinder ±0.25D/±0.50D
Auto Cross cylinder
Red-Green filter, Polarizing filter (45°/135°, Circular Polarizing Filter
Δ
/10Δ), Red Maddox (horizontal/vertical), Lens for retinoscopy (+1.5D/
(6
+2.0D), Cross cylinder for measuring presbyopia (±0.50D), Occluding plate
(right/left), Pinhole, and Cross hairs glass (right/left).
12mm, 13.75mm, 16mm, 18mm, 20mm
Near-point distance 40/67cm
(Minimum papillary distance at 40cm convergence : 53mm)
15mm
300Ncm
1)
Δ
/0.5Δ /1.0
±0.25D
Δ
1) )2)
* Specifications and appearance are subject to change without advance notice for the product
improvement.
, Prism
DIMENSIONS AND WEIGHT
Main unit (Non-arm mounted type) Dimensions : 294 ~ 328mm (W) × 115mm (D) × 261mm (H)
Weight : 4kg
Main unit (Arm-mounted type) Dimensions : 294 ~ 328mm (W) × 115mm (D) × 324mm (H)
Weight : 4.6kg
PURPOSE OF USE
Used to measure the refractive power of eyes and perform the binocular function test.
OPERATION PRINCIPLE
On a disk built in the instrument, the lenses with a variety of refractive power are arranged. By
turning the disk, the lenses are changed to each other. There are two or more disks in the
instrument. So, measurement of different types can be carried out by selecting and combining
the disks.
ELECTRIC RATING
Power supply voltage: AC100-240V, 50-60Hz
Power supply input : 90VA
Essential performance
Lens changing function
34
SPECIFICATIONS AND PERFORMANCE
Page 37
ELECTROMAGNETIC COMPATIBILITY
This product conforms to the EMC standard (IEC60601-1-2 Ed.3.0: 2007).
a) MEDICAL ELECTRICAL EQUIPMENT needs special precautions regarding EMC and needs
to be installed and put into service according to the EMC information provided in the ACCOMPANYING DOCUMENTS.
b) Portable and mobile RF communications equipment can affect MEDICAL ELECTRICAL
EQUIPMENT.
c) The use of ACCESSORIES, transducers and cables other than those specified, with the
exception of transducers and cables sold by the manufacturer of the EQUIPMENT or SYSTEM
as replacement parts for internal components, may result in increased EMISSIONS or
decreased IMMUNITY of the EQUIPMENT or SYSTEM.
d) The EQUIPMENT or SYSTEM should not be used adjacent to or stacked with other equip-
ment. If adjacent or stacked use is necessary, the EQUIPMENT or SYSTEM should be
observed to verify normal operation in the configuration in which it will be used.
e) The use of the ACCESSORY, transducer or cable with EQUIPMENT and SYSTEMS other than
those sepecified may result in increased EMISSION or decreased IMMUNITY of the EQUIPMENT or SYSTEM.
Item Article code Model No. Length (m)
Power supply unit 43221 9532 — —
1 Dial Controller KB-50 * 43221 9032 — —
1 Dial Controller KB-10 43221 9053 — —
CV-5000 Cable 43221 5740 — 0.2
CV Connection Cable (CVCS cable) 43214 0006 — 4.5
CV Connection Cable (CVCS cable) 43221 5780 — 8.0
KB Connection Cable (KB-50 Cable) * 41812 0002 — 3.0
AC power cord 43221 9040 — 3.0
* Only in CV-5000
KB-10 is not available in some regions.
Guidance and manufacturer's declaration - electromagnetic emissions
The CV-5000 is intended for use in the electromagnetic environment specified below.
The customer or the user of the CV-5000 should assure that it is used in such an environment.
Emissions test Compliance Electromagnetic environment - guidance
The CV-5000 uses RF energy only for its internal funcRF emissions
CISPR 11
RF emissions
CISPR 11
Harmonic emissions
IEC61000-3-2
Voltage fluctuations/
flicker emissions
IEC61000-3-3
Group 1
Class B
Class A
Complies
tion. Therefore, its RF emissions are very low and are
not likely to cause any interference in nearby elec-
tronic equipment.
The CV-5000 is suitable for use in all establishments,
including domestic establishments and those directly
connected to the public low-voltage power supply net-
work that supplies buildings used for domestic pur-
poses.
35
SPECIFICATIONS AND PERFORMANCE
Page 38
Guidance and manufacturer's declaration - electromagnetic immunity
The CV-5000 is intended for use in the electromagnetic environment specified below.
The customer or the user of the CV-5000 should assure that it is used in such an environment.
Immunity test
IEC 60601
test level
Compliance
level
Electromagnetic environment
- guidance
Floors should be wood, conElectrostatic
discharge (ESD)
IEC 61000-4-2
± 6 kV contact
± 8 kV air
± 6 kV contact
± 8 kV air
crete or ceramic tile. If floors are
covered with synthetic material,
the relative humidity should be
at least 30%.
Mains power quality should be
that of a typical commercial or
hospital environment.
Mains power quality should be
that of a typical commercial or
hospital environment.
Mains power quality should be
that of a typical commercial or
hospital environment. If the user
or the CV-5000 requires contin-
ued operation during power
mains interruptions, it is recom-
mended that the CV-5000 be
powered from an uninterruptible
power supply or battery.
Power frequency magnetic
fields should be at levels char-
acteristic of a typical location in
a typical commercial or hospital
environment.
Electrical fast
transient/burst
IEC 61000-4-4
Surge
IEC 61000-4-5
Voltage dips, short
interruptions and
Voltage variations
on power supply
input lines
IEC 61000-4-11
Power frequency
(50/60 Hz)
magnetic field
IEC 61000-4-8
NOTE U
is the a.c. mains voltage prior to application of the test level.
t
± 2 kV for power
supply lines
± 1 kV for
input/output lines
± 1 kV
line(s) to line(s)
± 2 kV
line(s) to earth
<5% U
t
(>95% dip in Ut)
for 0.5 cycle
40% U
t
(60% dip in Ut)
for 5 cycles
70% U
t
(30% dip in Ut)
for 25 cycles
<5% U
t
(>95% dip in Ut)
for 5 sec
± 2 kV for power
supply lines
± 1 kV for
input/output lines
± 1 kV
line(s) to line(s)
± 2 kV
line(s) to earth
<5% U
(>95% dip in Ut)
for 0.5 cycle
40% U
(60% dip in Ut)
for 5 cycles
70% U
(30% dip in Ut)
for 25 cycles
<5% U
(>95% dip in Ut)
for 5 sec
3 A/m 3 A/m
t
t
t
t
36
SPECIFICATIONS AND PERFORMANCE
Page 39
Guidance and manufacturer's declaration - electromagnetic immunity
PPP
The CV-5000 is intended for use in the electromagnetic environment specified below.
The customer or the user of the CV-5000 should assure that it is used in such an environment.
Immunity test IEC 60601
test level
Compliance
level
Electromagnetic environment -
guidance
Portable and mobile RF communications
equipment should be used no closer to
any part of the CV-5000, including cables,
than the recommended separation distance calculated from the equation applicable to the frequency of the transmitter.
Conducted RF
IEC 61000-4-6
Radiated RF
IEC 61000-4-3
3 Vrms
150kHz to 80MHz
3 V/m
80MHz to 2.5GHz
3 V
3 V/m
Recommended separation distance
d = 1.2
d = 1.2 80MHz to 800MHz
d = 2.3 800MHz to 2.5GHz
where P is the maximum output power
rating of the transmitter in watts (W)
according to the transmitter manufacturer
and d is the recommended separation
distance in meters (m).
Field strengths from fixed RF transmitters,
as determined by an electromagnetic site
survey,
ance level in each frequency range.
a
should be less than the compli-
b
Interference may occur in the vicinity of
equipment marked with the following
symbol:
NOTE 1
NOTE 2
abField strengths from fixed transmitters, such as base stations for radio (cellular/cordless) telephones
At 80 MHz and 800 MHz, the higher frequency range applies.
These guidelines may not apply in all situations. Electromagnetic propagation is affected by
absorption and reflection from structures, objects and people.
and land mobile radios, amateur radio, AM and FM radio broadcast and TV broadcast cannot be predicted theoretically with accuracy. To assess the electromagnetic environment due to fixed RF transmitters, an electromagnetic site survey should be considered. If the measured field strength in the
location in which the CV-5000 is used exceeds the applicable RF compliance level above, the CV5000 should be observed to verify normal operation. If abnormal performance is observed, additional
measures may be necessary, such as reorienting or relocating the CV-5000.
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
37
SPECIFICATIONS AND PERFORMANCE
Page 40
Recommended separation distance between
PPP
portable and mobile RF communications equipment and the CV-5000
The CV-5000 is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The customer or the user of the CV-5000 can help prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF
communications equipment (transmitters) and the CV-5000 as recommended below, according
to the maximum output power of the communications equipment.
Separation distance according to frequency of transmitter
m
Rated maximum output
power of transmitter
W
0.01 0.12 0.12 0.23
0.1 0.38 0.38 0.73
1 1.2 1.2 2.3
10 3.8 3.8 7.3
100 121223
For transmitters rated at a maximum output power not listed above, the recommended separation distance d in metres (m) can be estimated using the equation applicable to the frequency of
the transmitter, where P is the maximum output power rating of the transmitter in watts (W)
according to the transmitter manufacturer.
150kHz to 80MHz
d = 1.2
80MHz to 800MHz
d = 1.2
800MHz to 2.5GHz
d = 2.3
NOTE 1
NOTE 2
At 80 MHz and 800 MHz, the separation distance for the higher frequency range
applies.
These guidelines may not apply in all situations. Electromagnetic propagation is
affected by absorption and reflection from structures, objects and people.
38
SPECIFICATIONS AND PERFORMANCE
Page 41
SYSTEM CLASSIFICATION
Types of protection against electric shocks: This instrument is classified as Class I equipment.
Class I equipment does not depend only on basic insulation for protection against electric
shocks, but also provides a means of connection to a protective earth system of facilities so
that metal parts that come into contact do not become conductive while the basic insulation is
in failure.
Degree of protection against electric shocks: Type B applied part
Type B applied part is the applied part complying with the specified requirements of the Standard IEC 60601-1 to provide protection against electric shock, particularly regarding allowable
LEAKAGE CURRENT.
The forehead rest of this instruments is "Type B applied part".
Degree of protection against harmful ingress of water: IPx0
CV-5000 has no protection against ingress of water. (The degree of protection against harmful
ingress of water defined in IEC60529 is IPx0.)
Classification according to the method(s) of sterilization or disinfection recommended by
the manufacturer: not applicable.
CV-5000 has no part to be sterilized or be disinfected.
Classification according to the degree of safety of application in the presence of a flammable anesthetic mixture with air or with oxygen or nitrous oxide: Equipment not suitable for
use in the presence of a flammable anesthetic mixture with air or with oxygen or nitrous
oxide.
CV-5000 should be used in environments where no flammable anesthetics and/or flammable
gases are present.
Classification according to the mode of operation: Continuous operation.
Continuous operation is the operation under normal load for an unlimited period, without the
specified limits of temperature being exceeded.
SPECIFICATIONS AND PERFORMANCE
39
Page 42
REFERENCE MATERIAL
SHAPE OF PLUG
Country Voltage/frequency Shape of plug
Mexico 110V/50Hz Type C&E
Argentina 220V/60Hz Type A
Peru 220V/60Hz Type A
Venezuela 110V/50Hz Type C&E
Bolivia & Paraguay
Chile 220V/60Hz Type A
Colombia 110V/50Hz Type C
Brazil 220V/60Hz
Ecuador 110V/50Hz Type C&E
USA 120V/60Hz Type A (Hospital Grade)
Canada 120V/60Hz Type A (Hospital Grade)
220V/60Hz
127V/60Hz
Type A (Most common)
Type H (Infrequently)
Typ e A
Typ e C
SYMBOL
Symbol IEC Publication Description Description (French)
60417-5032 Alternating current Courant alternatif
60348
60417-5008
60417-5007
60878-02-02 Type B applied part Partie appliquée du Type B
Attention, consult accompanying documents
Off (power: disconnection
from the mains)
On (power: connection of
the mains)
Attention, consulter les documents d'accompagnement
Éteint (courant: coupure
avec le secteur)
Allumé (courant: raccordement sur le secteur)
40
REFERENCE MATERIAL
Page 43
CORNEAL ALIGNING DEVICE
Scale
Patient’s eyes
Approx. 25cm
Collimation
Inspector’s eyes
Scale style
Position of 12mm
D’= ±
L×D
2
1000-L×D
D=Measured power (D)
D’= Corrected power (D)
L=Difference between the measuring distance and eyeglass
wearing distance (mm)
The forehead rest moves back and forth by turning the forehead rest knob.
With the patient's forehead set on the forehead
rest, look through the corneal aligning window
from the position about 25cm apart from its front.
Look at the patient's eye (cornea surface) so that
the long lines of the collimation and scale are
aligned.
If the eye (cornea surface) is on the long line, the
eyeglass refractive power can be measured at
the position 12mm away from the surface of cornea. The short lines are given at 2mm intervals from the long line. The dotted line is 13.75mm
away from the cornea surface.
For example, if the cornea surface is 4mm away (on the second short line from the long line),
the eyeglass refractive power is measured at the position of "12+4=16mm".
If the eyeglass wearing distance is different from the measuring distance, correction is to be
made according to Tables 1 and 2.
Example 1:
When the measuring distance is 4mm from the long line (on the second short line) and the
prescription is the spherical power of +8.00D:
On Table 1, the intersection of "+8.00D" and "4mm" is the correction value "+0.26D".
Therefore, the lens refractive power at 12mm from the eye is "(+8.00) + (+0.26) = +8.26D".
After correction, the value needs to be rounded by either 0.25D or 0.12D.
In this case, the value is +8.25D.
Example 2:
When the measuring distance is 3mm from the long line (between the first and second short
lines) and the prescription is the spherical power of -10.50D:
When an intermediate value of the correction values on the intersections of "-10.00D" and
"-11.00D" with "3mm" on Table 2, it is 0.32. This value should be regarded as the correction
value. Therefore, the lens refractive power at 12mm from the eye is calculated as follows.
(-10.50) + (+0.32) = -10.18D
Example 3:
When the measuring distance is 6mm from the long line (on the third short line) and the prescription is the spherical power of -14.00D and the astigmatic power of -6.00D:
On Table 2, the intersection of "-14.00D" and "6mm" is the correction value "+1.08D".
Therefore, the lens refractive power at 12mm from the eye is "(-14.00) + (+1.08) = -12.92D".
For the astigmatic power, perform the calculation "(-14.00) + (-6.00) = -20.00D".
The intersection of "-20.00D" and "6mm" is the correction value "+2.14D".
Therefore, the lens refractive power at 12mm from the eye is "(-20.00) + (+2.14) = -17.86D".
Perform the calculation "(-17.86) – (-12.92) = -4.94D".
The spherical power "-12.92D" and the astigmatic power "-4.94D" are obtained.
If the difference between the measured refractive power or measuring distance and the eyeglass wearing distance is odd, use the formula below:
REFERENCE MATERIAL
41
Page 44
Correction value (When the measured refractive power is in plus region)
<Table 1>
L mm
D dptr
+1.00 0.001 0.002 0.000 0.004 0.005 0.006 0.007 0.008 0.009 0.01
+2.00 0.004 0.008 0.01 0.02 0.02 0.02 0.03 0.03 0.04 0.04
+3.00 0.01 0.02 0.03 0.04 0.05 0.06 0.06 0.07 0.08 0.09
+4.00 0.02 0.03 0.05 0.07 0.08 0.10 0.12 0.13 0.15 0.17
+5.00 0.03 0.05 0.08 0.10 0.13 0.15 0.18 0.21 0.24 0.26
+6.00 0.04 0.07 0.11 0.15 0.19 0.22 0.26 0.30 0.34 0.38
+7.00 0.05 0.10 0.15 0.20 0.25 0.31 0.36 0.42 0.47 0.53
+8.00 0.06 0.13 0.20 0.26 0.33 0.40 0.47 0.55 0.62 0.70
+9.00 0.08 0.16 0.25 0.34 0.42 0.51 0.61 0.70 0.79 0.89
+10.00 0.10 0.20 0.31 0.42 0.53 0.64 0.75 0.87 0.99 1.11
+11.00 0.12 0.25 0.38 0.51 0.64 0.78 0.92 1.06 1.21 1.36
+12.00 0.15 0.30 0.45 0.61 0.77 0.93 1.10 1.27 1.45 1.64
+13.00 0.17 0.35 0.53 0.71 0.90 1.10 1.30 1.51 1.72 1.94
+14.00 0.20 0.40 0.61 0.83 1.05 1.28 1.52 1.77 2.02 2.28
+15.00 0.23 0.46 0.71 0.96 1.22 1.48 1.76 2.05 2.34 2.65
+16.00 0.26 0.53 0.81 1.09 1.39 1.70 2.02 2.35 2.69 3.05
+17.00 0.29 0.60 0.91 1.24 1.58 1.93 2.30 2.68 3.07 3.48
+18.00 0.33 0.67 1.03 1.40 1.78 2.18 2.59 3.03 3.48 3.95
+19.00 0.37 0.75 1.15 1.56 1.99 2.44 2.91 3.41 3.92 4.46
+20.00 0.41 0.83 0.13 1.74 2.22 2.73 3.26 3.81 4.39 5.00
12345678910
Correction value (When the measured refractive power is in minus region)
<Table 2>
L mm
D dptr
-1.00 0.001 0.002 0.000 0.004 0.005 0.006 0.007 0.008 0.009 0.01
-2.00 0.004 0.008 0.01 0.02 0.02 0.02 0.03 0.03 0.04 0.04
-3.00 0.009 0.02 0.03 0.04 0.04 0.05 0.06 0.07 0.08 0.09
-4.00 0.02 0.03 0.05 0.06 0.08 0.09 0.11 0.12 0.14 0.15
-5.00 0.02 0.05 0.07 0.10 0.12 0.15 0.17 0.19 0.22 0.24
-6.00 0.04 0.07 0.11 0.14 0.17 0.21 0.24 0.27 0.31 0.34
-7.00 0.05 0.10 0.14 0.19 0.24 0.28 0.33 0.37 0.41 0.46
-8.00 0.06 0.13 0.19 0.25 0.31 0.37 0.42 0.48 0.54 0.59
-9.00 0.08 0.16 0.24 0.31 0.39 0.46 0.53 0.60 0.67 0.74
-10.00 0.10 0.20 0.29 0.38 0.48 0.57 0.65 0.74 0.83 0.91
-11.00 0.12 0.24 0.35 0.46 0.57 0.68 0.79 0.89 0.99 1.09
-12.00 0.14 0.28 0.42 0.55 0.68 0.81 0.93 1.05 1.17 1.29
-13.00 0.17 0.33 0.49 0.64 0.79 0.94 1.08 1.22 1.36 1.50
-14.00 0.19 0.38 0.56 0.74 0.92 1.08 1.25 1.41 1.57 1.72
-15.00 0.23 0.44 0.65 0.85 1.05 1.24 1.43 1.61 1.78 1.96
-16.00 0.25 0.50 0.73 0.96 1.19 1.40 1.61 1.82 2.01 2.21
-17.00 0.28 0.56 0.82 1.08 1.33 1.57 1.81 2.04 2.26 2.47
-18.00 0.32 0.63 0.92 1.21 1.49 1.75 2.01 2.27 2.51 2.75
-19.00 0.35 0.70 1.02 1.34 1.65 1.94 2.23 2.51 2.77 3.03
-20.00 0.39 0.77 1.13 1.48 1.82 2.14 2.46 2.76 3.05 3.33
12345678910
42
REFERENCE MATERIAL
Page 45
MAINTENANCE
DAILY CHECKUPS
• Dust is a formidable foe to the instrument. When not in use, apply the dust cover to the
instrument.
• When not in use, turn off the power.
ORDERING CONSUMABLES
• When ordering consumables, contact your dealer or TOPCON office (listed on the back
cover) and tell them the article name, article code and quantity.
Article name Article code
Printer paper 44800 4001
Fuse T 4A 250V 42038 9004
Forehead rest 43221 3054
Face shield (left) 43221 4010
Face shield (right) 43221 4020
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MAINTENANCE
Page 46
REPLACING THE FUSE
To avoid electric shock, be sure to remove the power cable from the
WARNING
instrument body before removing the fuse cover for replacement.
Also, do not connect the power cable to the instrument body with the
fuse cover left unfixed.
WARNING
To avoid fire in the event of an instrument malfunction, use a properly
rated fuse.
1 Make sure that the power of the instrument is OFF and then unplug the power cord.
2 Push the claws at the both ends of fuse holder with a slotted screwdriver and remove the
fuse holder.
3 Replace the fuse with a new accessory fuse.
4 Push in the fuse holder until "click" is heard.
44
MAINTENANCE
Page 47
CLEANING
Do not wipe the forehead rest, face shield and other resin parts with
NOTICE
Cleaning the parts which contact the patient
If the forehead rest or face shield is stained, prepare a tepid solution of the neutral detergent for
kitchenware. Moisten the cloth with the aforementioned solution and wring it thoroughly. Then,
wipe the forehead rest (Type B applied part) or face shield with it at regular interval.
Cleaning the lens
volatile solvent. To prevent the resin parts from discoloring or deteriorating, do not use benzine, thinner, ether or gasoline.
NOTICE
If the lens is stained, wipe it with the accessory silicone cloth at regular interval. If the stain is
not removed, moisten a worn-out cotton cloth a little with a mixed solution (the ratio of ether 4
to alcohol 1) and wipe the lens with it.
Cleaning the external cover and operation panel
When the external cover or operation panel is stained, wipe it with a dry cloth at regular interval.
If the external cover is badly stained, use a neutral cleanser.
Do not wipe the lens with the gauze held by tweezers, etc.
The glass surface may be damaged.
45
MAINTENANCE
Page 48
INSPECTING THE OPTOMETRY UNIT MOUNTING SECTION
If the mounting section for the CV-5000 and the optometry unit, which are in use, is loosened,
an unexpected accident may be caused.
To use the instrument safely, it is recommended to inspect it every day.
Point for inspection
Inspect the connecting section between the CV-5000 and the arm.
NOTICE
Raise the CV-5000 instrument as shown below. If an abnormal noise is heard or any part is
unsteady between the arm and the arm mounting shaft, immediately contact the TOPCON
offices listed on the back cover and ask them to repair your instrument.
Raise the instrument vertically. If you raise it slantwise, it is difficult to check if any part is
unsteady because the arm mounting shaft moves horizontally.
Hold the PD unit when moving the head.
46
MAINTENANCE
Page 49
SETTING THE PRINTER PAPER
NOTICE
NOTICE
Use the printer paper of width 58mm.
The paper has its front and rear. If the paper is reversely set, printing
is impossible.
Insert the paper to the innermost of the printer.
If not, the paper may not be fed.
1 Push the printer release lever to open the cover.
2 Insert the printer paper to the printer shaft and
load the paper to the printer.
3 Pull out the paper end to the outside of the ejec-
tion port.
4 Close the cover. You can make sure by a "click"
sound that the cover is locked.
47
MAINTENANCE
Page 50
Page 51
Please provide the following information when contacting us regarding questions
about this instrument:
• Model name: CV-5000
• Serial No.: This is described on the rating nameplate on the top
surface of the instrument.
• Period of use: Please inform us of the date of purchase.
• Defective condition: Please provide us with as much detail as possible on the
problem.
COMPU-VISION CV-5000
INSTRUCTION MANUAL
2010 version (2010.04-100TH )
Date of issue: April 15, 2010
Published by TOPCON CORPORATION
75-1 Hasunuma-cho, Itabashi-ku, Tokyo, 174-8580 Japan.
©2010 TOPCON CORPORATION
ALL RIGHTS RESERVED
6
Page 52
COMPU-VISION
43221 90266
Printed in Japan 1004-200TH
6
CV-5000
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