Zeiss Humphrey Field Analyser II i-Series User manual 1

HUMPHREY

FIELD ANALYZER II - i series

USER’S GUIDE

®

Model 720i • Model 740i • Model 745i • Model 750i

Carl Zeiss Meditec Inc.
5160 Hacienda Drive
Dublin, CA 94568

General Inquiries [phone]

[phone]

www.meditec.zeiss.com

Customer Service [phone]

In Europe please contact:

Carl Zeiss Jena GmbH
Carl Zeiss Promenade 10
Jena 077405
Germany

Ph: [phone]
Fax: [phone]

www.zeiss.de

Copyright
© 2003 Carl Zeiss Meditec Inc. All rights reserved.

Trademarks
Humphrey Field Analyzer is a registered trademark of Carl Zeiss Meditec Inc., STATPAC, FastPac, and SITA are trademarks of Carl Zeiss Meditec Inc.,
Hewlett-Packard and LaserJet are registered trademarks of Hewlett-Packard Corporation. IBM is a registered trademark of the International Business
Machines Corporation. GoPrint is a trademark of the AeroComm company.

Every effort has been made to ensure that the information contained in this manual is true and correct at the time of printing. Any omissions or errors
are unintentional and will be corrected in future releases.

This book may not be reproduced in whole or in part by any means of information storage, retrieval, or reproduction without written permission from
Carl Zeiss Meditec Inc.

Humphrey® Field Analyzer II - i series

User’s Manual Revision Control

PART NUMBER REVISION TITLE RELEASE DATE

51680-1 B Humphrey® Field Analyzer II - i series 3-2003

User’s Guide
Models 720i, 740i, 745i, 750i

Table of Contents (this manual contains 314 pages)

Introduction/

1

Instrument Setup

(18 pages)

General

2

Operation

(24 pages)

Introduction/Instrument Setup 1-1

About Visual Fields 1-2

The Humphrey Advantage 1-5

Using This Guide 1-8

Safety Precautions 1-9

System Components 1-12

Additional Components 1-14

System Assembly 1-17

General Operation 2-1

General Information 2-2

The Main Menu Screen 2-9

System Setup 2-10

Additional Setup 2-21

Setting-up

3

Tests

(24 pages)

Test Parameters &

4

Strategies

(16 pages)

Help Screens 2-23

Setting-up Tests 3-1

Selecting the Test Pattern and Test Eye 3-2

Entering Patient Data 3-8

Using Trial Lenses 3-19

Preparing the Patient 3-22

Test Parameters & Strategies 4-1

Setting Test Parameters 4-2

Test Strategies 4-4

SITA™ Testing 4-10

Blue-Yellow (SWAP) Testing 4-11

Alternate Color Testing 4-16

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Testing

5

(18 pages)

Testing 5-1

Start Test Options 5-2

Monitoring and Maintaining the Patient’s Eye Position 5-4

Supplemental Testing 5-7

Test In Progress 5-10

Test Complete Options 5-14

Testing: A Step-by-Step Guide 5-16

Test

6

Reliability

(8 pages)

STATPAC Analysis &

7

Printing Results

(30 pages)

Test Reliability 6-1

Factors Affecting Reliability 6-2

Patient Compliance 6-2

Patient Fixation 6-3

Trial Lenses 6-3

Evaluating Reliability 6-4

Fixation Losses 6-4

False Positive Errors 6-4

False Negative Errors 6-6

Fluctuation Values 6-6

STATPAC Analysis & Printing Results 7-1

Introduction to STATPAC Analysis 7-2

Threshold Test Printout Formats 7-4

SITA Printout Formats 7-21

Blue-Yellow Printout Formats 7-23

Printing Current Threshold Test Results 7-25

Screening Printout Formats 7-26

Printing Current Screening Test Results 7-27

Printing Previously Saved Test Results 7-28

Grayscale Symbols 7-30

Remote Printer Access 7-30

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File

8

Functions

(20 pages)

File Functions 8-1

File Functions Menu 8-2

Retrieving the File Directory 8-4

Selecting Tests from the Directory 8-6

Performing File Functions 8-11

Organizing Patient Files 8-20

Database

9

Management

(22 pages)

Custom

10

(20 pages)

Testing

Database Management 9-1

Introduction to Database Management 9-2

Patient Database Protection Procedures 9-3

Configuration Backup and Restore 9-5

How to Handle Database Failures 9-10

Merge Database 9-20

Cleanup Hard Disk Database 9-21

Practices with Multiple Humphrey Field Analyzers 9-22

Care and Handling of Removable Storage Media

Custom Testing 10-1

Creating Custom Tests 10-2

Deleting Custom Tests 10-15

9-22

Performing Custom Tests 10-17

Printout Format

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10-19

11

(62 pages)

Kinetic

Testing

Kinetic Testing 11-1

Introduction to Kinetic Testing 11-2

Performing Manual Kinetic Perimetry 11-3

Pre-defined Kinetic Test Patterns 11-14

Running Automated Kinetic Tests 11-15

Social Security Administration Kinetic Disability Test 11-24

Special Mapping 11-27

Viewing Kinetic Tests 11-40

Printing Kinetic Tests 11-43

Designing a Custom Kinetic Test Pattern 11-48

Creating the SSA Aphakic (Size IV) Disability Test 11-57

Care &

12

(14 pages)

Appendix

(36 pages)

Cleaning

Care & Cleaning 12-1

General Use Principles 12-2

Cleaning the HFA II 12-2

Replacing Parts 12-4

Operating the Printrex Printer 12-10

Touch Screen Calibration 12-12

Using Data Disks 12-13

A HFA II Product Specifications A-1

B Warranty Statement and Notification of Copyright B-1

C Icon Glossary C-1

D Goldmann Conversion Tables D-1

E Test Patterns E-1

F Installing New HFA II Software F-1

G How SITA Works / Acknowledgments G-1

H Troubleshooting / Parts List H-1

Index

(6 pages)

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Introduction/Instrument Setup

About Visual Fields 1-2

The Humphrey Advantage 1-5

Using This Guide 1-8

Safety Precautions 1-9

System Components 1-12

Additional Components 1-14

System Assembly 1-17

You are about to use the most advanced automated perimeter available, the Humphrey
Analyzer II (HFA II). This introductory section covers general information about the HFA II,
including a brief discussion of visual fields and a summary of important instrument features.

1

®

Field

After reading Section 1 you will be familiar with:

• the importance of visual field testing

• general principles of perimetry

• unique features of the Humphrey Field Analyzer II

• installation and safety precautions

• connecting optional external printers.

Welcome

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1-2 INTRODUCTION / INSTRUMENT SETUP

ABOUT
VISUAL FIELDS

When asked to assess one’s own vision, the average person often will confidently reply “I see
20/20”, “20/100” or whatever the result of their visual acuity test. Fortunately, doctors
appreciate the complexities involved in evaluating visual function and rely on an extensive and
varied battery of diagnostic tests and instruments as part of the ocular examination. Without
question, one of the most essential tools in the modern ophthalmic office is the computerized
perimeter, used to evaluate the visual field.

The purpose of visual field testing, or perimetry, is to provide information critical to:

• diagnosing ocular diseases, especially glaucoma

• evaluating neurological diseases

• monitoring the progress of ocular and neurological diseases.

Visual field testing can lead to early detection and treatment of disease. In the case of glau­coma, visual fields play a major role in identifying visual field defects and evaluating the
efficacy of the therapy used to control the disease process.

What visual field When evaluating visual performance, clinicians are primarily interested in two retinal
tests measure functions: resolution and contrast sensitivity. Resolution is the ability to identify discrete forms

(letters, numbers, symbols), and is commonly measured with the visual acuity test. Resolution
rapidly diminishes with increasing distance from the fovea and is, therefore, a poor indicator
of overall visual performance.

A better means of evaluating visual function—especially those areas less sensitive than the
fovea—is contrast sensitivity testing. Contrast sensitivity is the ability to detect a stimulus (spot
of light or other target) against a darker or brighter background. Standard Humphrey
perimetry may be thought of as contrast sensitivity testing applied throughout the peripheral
visual field.

In perimetry, the term “threshold” is used to describe a very specific level of stimulus detec­tion. The threshold represents the point at which a stimulus is seen 50% of the time and
missed 50% of the time. The assumption is that all stimuli brighter than the threshold value
will be seen and all stimuli dimmer will be missed. Reviewing the threshold value at each point
tested in the visual field is an important part of the diagnostic process.

Visual field tests can yield information that is general in nature, as with screening tests, or
more exacting and quantitative, as with threshold tests. In deciding which test type is most
appropriate for a patient the practitioner is influenced by many factors, including the patient’s
presenting complaint, family history, age, degree of cooperation, and time available to run
the test.

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INTRODUCTION / INSTRUMENT SETUP 1-3

BLIND
SPOT

FOVEA

Normal versus The visual field normally extends more than 90° temporally, 60° nasally and superiorly,
pathologic fields and about 70° inferiorly. That means a person can potentially perceive stimuli within this

range while staring at a fixed point.

Superior

60°

Temporal

60°

Nasal

70°

Inferior

90°

Figure 1.1: The Boundaries of the Normal Visual Field

A more comprehensive understanding of the normal field takes into account that visual
sensitivity is not constant (or equal) throughout the range. As previously stated, vision is most
acute at the fovea and decreases toward the periphery of the retina. It is easy to see why the
visual field is often expressed as a “hill of vision in a sea of darkness”.

Figure 1.2: The Normal Hill of Vision

Several factors affect the normal hill of vision causing variations in its overall height and shape.
Among them are a patient’s age, ambient light, stimulus size, and stimulus duration. In general,
deviations from the normal hill are viewed as visual field defects and caused by some patho­logical change.

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1-4 INTRODUCTION / INSTRUMENT SETUP

A defect (or scotoma) is categorized as either relative or absolute. A relative defect is an area
that has depressed vision or less than normal sensitivity; an absolute defect is an area where
the perception of light is absent. The point at which the optic nerve enters the retina is referred
to as the blind spot, and is an example of an absolute scotoma.

Some defect patterns are characteristic of certain diseases, a fact which makes visual field
testing a valuable part of the diagnostic process. Furthermore, by having patients repeat the
same tests at later dates, practitioners gain insight into the progression of the disease and the
effectiveness of treatment.

Methods of testing Over the years, visual field testing devices have varied in size, complexity, and testing
the visual field methodology. The fundamental premise has remained the same, however; patients must

respond when they see a stimulus.

In kinetic testing, a target of fixed stimulus characteristics is moved into the visual field from a
non-seeing area, until it is detected by the patient. Typically, the target is brought toward the
center from several directions and the operator marks the location at which the patient first
detects the target (threshold point).

Kinetic test results can only be reliably related to specific parts of the visual field if points are
joined to form an isopter, or ring of equal contrast sensitivity. Targets of varying size and
brightness are used during one kinetic test, and for each different target, a different isopter is
mapped. When reviewing several isopters, the clinician is visualizing different tiers in the hill
of vision.

A second method of evaluating retinal function is known as static threshold testing. The term
“static” refers to a stationary (rather than moving) stimulus being used.

In static testing, predefined test locations in the visual field are probed. Through a series of
stimulus presentations of varying brightness intensities, the threshold value is determined for
each test point. When evaluating static test results, clinicians are looking at the topography or
contour of the hill of vision, and whether depressions are evident.

Patient fixation and In order for any visual field test to be clinically useful, it must yield reliable results. One
test reliability important factor affecting reliability is the steadiness of patient fixation. Unless the eye being

tested accurately fixates on the target while responding to stimuli, the results are unreliable.
Other factors adversely affecting reliability are:

• patient fatigue and anxiety

• poor test instructions

• patient discomfort

• improper near vision correction for central testing.

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INTRODUCTION / INSTRUMENT SETUP 1-5

Reasons for Certainly the advancements in microprocessor technology within the last 20 years have had
computerized perimetry a profound effect on perimetry. Perimeters have evolved into a more precise measuring tool

yielding highly repeatable results.

These changes are better appreciated by examining the benefits computerized perimeters bring
to both patient and professional:

• Reproducible testing conditions.

• Data storage capability; results can be compared over time and analyzed using expert
system software.

• More sensitive testing; many researchers claim static perimetry to be superior to the
kinetic method for identifying defects. Performed manually, static testing would be too
time-consuming.

• Ease of operation; menu-driven software makes automated perimeters easy to learn and
use.

THE HUMPHREY
ADVANTAGE

Over 15 years of advancements in research, design and development are reflected in the
Humphrey
suggested by users from around the world who have generously shared their best ideas with
Carl Zeiss Meditec. With over 30,000 Humphrey Field Analyzers in use worldwide, Carl Zeiss
Meditec took on the challenge of improving the testing experience for the patient, the operator,
and the practitioner. Here are some of the features which differentiate the HFA II from all other
autoperimeters available today.

®

Field Analyzer II. Equally important, the latest models represent improvements

Ergonomic design The HFA II relieves many physical discomforts

associated with visual field testing. The chin
rest and bowl shape allow patients to assume a
more natural and relaxed sitting position when
taking tests.

The special power table and instrument slider
improve patient comfort by permitting the HFA II
to extend out to the patient instead of the patient
stretching toward the instrument. This is espe­cially important for wheelchair bound patients.

The patient response button is easy to operate,
especially for patients who have limited use of their hands; for instance, patients with arthritis.
The uniquely-shaped button may be placed on a knee, lap or the arm of a chair for better
leverage. The cord angles away from the patient for greater comfort. The response button will
beep each time it is pressed to give immediate feedback to the patient and to the user.

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1-6 INTRODUCTION / INSTRUMENT SETUP

Easy operation Sophisticated instrumentation need not be complicated. The HFA II offers a number of features

intended to make the instrument easier to use:

• Touch screen design speeds data input.

• Menu and icon commands simplify operation.

• On-screen video eye monitor is standard on all models.

• Confirmation screens reduce unintentional data loss.

• A keyboard and trackball or mouse can be connected to the HFA II as optional data
input devices.

Speedy testing Carl Zeiss Meditec’s SITA™ testing strategies allow precise visual field measurements

with unprecedented speed. With the SITA strategies, users can obtain visual field information in
half the time it takes using conventional testing algorithms without compromising accuracy.
SITA represents the very latest in autoperimetry technology and it is only available with your
Humphrey Field Analyzer II.

Sophisticated data The Humphrey Field Analyzer’s statistical software, STATPAC™, provides immediate expert
analysis with STATPAC™ system analysis of visual field test results. With STATPAC you can analyze test results at the time

of examination, store test results and analyze them at your convenience, or recall previously
stored tests to analyze for comparative purposes.

STATPAC includes several exclusive features to help you identify visual field change:

• Using results from a single test, STATPAC can point out suspicious areas that otherwise
might not be evident until subsequent tests were done.

• STATPAC can identify areas that look suspicious but which, in fact, compare favorably
with normals data.

• Using results from a series of tests, STATPAC provides a highly sensitive and informative
analysis of changes in the patient’s visual field over time.

• The Glaucoma Hemifield Test (GHT) compares points in the superior and inferior
hemifields to provide a plain language analysis of test results.

• The HFA II provides separate databases for STATPAC analysis. These include databases
for SITA and Blue-Yellow perimetry, in addition to the well-established databases for
Full Threshold and FastPac test results.

• Another database consisting of stable glaucoma patients is used with the Glaucoma
Change Probability Analysis for following change in the progress of the disease. This
analysis is only available with Full Threshold testing.

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INTRODUCTION / INSTRUMENT SETUP 1-7

Blue-Yellow (SWAP) testing Blue-Yellow perimetry, also known as Short Wavelength Automated Perimetry, or SWAP,
(model 745i and 750i) has performed better than standard computerized perimetry according to published

longitudinal studies. Working independently, researchers from U.C. Davis and U.C. San Diego
have found that Blue-Yellow perimetry identified early glaucomatous visual field defects years
before they could be detected using standard white-on-white perimetry.

Blue-Yellow perimetry differs from standard static White-on-White perimetry only in that a
carefully chosen wavelength of blue light is used as the stimulus, and a specific color and
brightness of yellow light is used for the background illumination. For more information on
Blue-Yellow perimetry, see Section 4 and Section 7.

Automatic fixation monitoring The HFA II employs several methods for ensuring that patients maintain proper fixation of the

target during testing. All models are equipped with a video eye monitor which presents a view
of the patient’s eye on-screen so that users can ensure proper patient fixation. Every HFA II also
offers standard Heijl-Krakau blind spot monitoring.

Models 740i, 745i and 750i also offer Gaze Tracking: a patented, high precision system which
uses real-time image analysis to verify the patient is looking at the fixation target and not
looking around. The gaze tracking device is unaffected by the patient’s head position. A
continuous record of fixation is available for monitoring on the test screen throughout the test.
The gaze track graph is included on the printout to provide a permanent record of the patient’s
fixation.

For patients who require a trial lens, the model 750i uses Head Tracking and Vertex Monitor­ing to help ensure that the patient’s eye is both centered behind the lens and is held at the
proper distance from the lens. These features help to eliminate the trial lens as a possible
source of unreliable visual field results.

Data protection features Visual field results need to be saved and protected for future use. The HFA II offers you a

number of data storage methods to file the results. Floppy disk data storage is available with all
models of the HFA II. Magneto-optical disk backup is available on the model 750i of the HFA II
and is optional with other models. There are a number of additional data protection features
that work internally to safeguard your data from serious loss or damage. This User’s Guide
describes in great detail the procedures for creating extra copies of your data.

Information on the internet New information about your HFA II may be found on the Carl Zeiss Meditec web site. The

internet address is : www.meditec.zeiss.com

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1-8 INTRODUCTION / INSTRUMENT SETUP

USING THIS GUIDE

To fully appreciate the capability of the HFA II and develop good testing techniques, we
recommend that you rely on the User’s Guide as your training and reference manual. It has
been designed to make learning easy. The concise step-by-step instructions and accompanying
illustrations help you get started quickly and with more confidence.

We think you will enjoy working with the HFA II. The friendly touch control makes it inviting to
learn and easy to operate. For optimum results:

• Read your guide in the order written.

• Read it while sitting at the instrument.

• Practice using the HFA II by first testing staff members before using it with patients.

Model differentiation This guide contains instructions for Models 720i, 740i, 745i and 750i. Although much of the

information is relevant to all models, some information only applies to particular models.

When a feature or function applies to specific models, this guide specifies the model
number(s), often in parentheses, in a prominent location. An example of this is found in the
previous discussion of Blue-Yellow testing (previous page). Conversely, model numbers are
not specified when information is standard or optional on all models.

You can find the model number of your instrument on the rear panel of the HFA II or you may
access this information via the “i ” button located in the upper, left-hand corner of the screen
(see Section 2: “The Information “i ” Button”). If you are unsure about the particular
capabilities of your instrument, refer to Appendix A: “HFA II Product Specifications”.

Text conventions The terms “select,” “choose,” and “press” are used interchangeably. Each term means to

initiate an operator action using the touch screen, external keyboard, trackball, or mouse. The
terms “hard disk” and “hard drive” are used interchangeably in reference to the data storage
device standard on all HFA II models.

UPPER CASE LETTERS are reserved for references to specific command buttons found on the
touch screen. The exceptions to this are messages on test printouts, the words STATPAC, SITA,
SWAP, HFA II, and headings.

Italicized words are used to identify the icon buttons on the right border of the screen, the
titles of figures, pictures, tables, and special notes in this manual.

Bold words are used to highlight warnings and section headings.

Additional references The User Guide cannot possibly cover every situation you may encounter with the HFA II,

especially interpretation questions. Your HFA II comes with a copy of The Field Analyzer

Primer which provides an overview of visual field results. Automated Static Perimetry,
Second Edition, by Douglas R. Anderson and Vincent Michael Patella (Mosby, Inc., St. Louis),

is recommended for in-depth information and analysis of visual fields.

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INTRODUCTION / INSTRUMENT SETUP 1-9

SAFETY
PRECAUTIONS

The Humphrey Field Analyzer II complies with UL, CSA, EN and IEC safety requirements.
Follow all warnings and precautions to ensure the safe installation and operation of the
Humphrey Field Analyzer.

CAUTION: This instrument is NOT anesthetic-proof. Do NOT use it in the
of a flammable anesthetic since this creates a risk of explosion!

General safety requirements • Although the Humphrey Field Analyzer II is designed for continuous operation, it should

be turned off and covered with the dust cover when not used for an extended period of
time. The HFA II should be used in a cool, dry and dust-free setting.

• The HFA II is classified as Type B, class I protection equipment. To prevent electric
shock, the instrument must be plugged into an earth grounded outlet.

• Do NOT connect or disconnect cables while power is on.

• Do NOT place any objects on top of the instrument.

• Do NOT place any container holding liquid near the instrument.

• Do NOT place the dust cover on the instrument while the instrument is powered on.

• Do NOT attempt to open the front or rear covers on the HFA II. Only authorized Carl
Zeiss Meditec Service personnel should perform repairs on your instrument.

Installation safety • The Humphrey Field Analyzer II is equipped with a three-prong plug. The instrument
precautions should be plugged into a correctly wired outlet with a ground receptacle. If the plug

does not fit the outlet, contact an electrician. Do NOT disable or remove the ground pin.

presence

• Do NOT overload your AC outlet.

• If the cord or plug is damaged, do NOT continue to use the instrument. Electrical shock
or fire hazard may result. Call Carl Zeiss Meditec Customer Service for replacement.

• Do not block the ventilation openings. These allow for the release of heat generated
during operation. A buildup of heat due to blockage can cause failures which may
result in a fire hazard.

• Use only a stand or table recommended by Carl Zeiss Meditec.

• If the stand or table has casters, do NOT try to roll it in deep pile carpet or over objects
on the floor such as cables and power cords. Lock the casters to secure the table.

• Do NOT place the instrument on an uneven or sloped surface.

• Do NOT use accessories that are not designed for this instrument. Use only those parts
recommended by Carl Zeiss Meditec to achieve optimum performance and safety.
Accessories must meet UL, CSA, EN, and IEC safety standards.

• Do NOT use the instrument in or near wet or moist environments.

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1-10 INTRODUCTION / INSTRUMENT SETUP

CAUTION: Always replace fuses with same type or rating. Failure to do so may
create a fire risk. Refer to fuse ratings listed on the label on the rear panel of the instrument

or on the table near the fuse holder. See Section 12.

Peripheral Placement NOTE: To maintain patient safety, peripheral devices such as printers must be placed at least
Instructions 1.5 meters (4.9 feet) away from the patient, such that the patient cannot touch a peripheral

device with any part of his or her body while being examined. In addition, the instument
operator must not attempt to touch the patient and a peripheral device at the same time while
examining the patient.

Radio and TV interference The Humphrey Field Analyzer II has passed all domestic and international electromagnetic

emission/suppression standards. However, it still generates small amounts of radio frequency
energy and may cause interference to radio, television or other instruments. If the HFA II does
cause interference to radio or television reception, the following measures may be necessary:

• Plug the Humphrey Field Analyzer II into a different outlet so that the
instrument and the receiving device are on different branch circuits.

• Reorient the HFA II with respect to the TV or the radio antenna.

• Move the receiving device and the HFA II away from each other.

• Use only shielded communication cables.

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INTRODUCTION / INSTRUMENT SETUP 1-11

Symbol definitions The following symbols appear on the HFA II:

Power On Power Off

Projector Bulb

Air Intake Filter

Serial RS-232
Communication Port

Printer

Floppy Disk Drive

Important Instructions
Found in Manual

Uninsulated High Voltage
Inside the Instrument
Risk of Electric Shock

Type B Class I

Brightness

USB Port

VGA Monitor

Keyboard

Mouse

Network

Fuse

Patient Response
Button

Data

Figure 1.3: HFA II Symbol Definitions

Power on The power switch is located on the rear panel of the instrument. The room lights should be

dimmed or off when turning on the HFA II. Once engaged, the HFA II begins performing a self­diagnostic checkup. In the event the computer detects a problem, a message will appear on the
start-up screen. Call Carl Zeiss Meditec Customer Service if necessary.

Should you need to unplug any component from the HFA II, remember to first turn off the
power to the HFA II. Disconnection procedures are the opposite of the sequence listed in this
Section. Whenever there is a question as to whether the HFA II is running properly or if there is
any question about electrical or fire safety: UNPLUG THE INSTRUMENT and call Carl Zeiss
Meditec Customer Service as soon as possible: 1-877-486-7473.

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1-12 INTRODUCTION / INSTRUMENT SETUP

SYSTEM COMPONENTS

Touch screen

Chin rest control

Patient response button

Touch screen
brightness control

Hard drive

Floppy drive

Magneto-Optical Drive

Figure 1.4: The HFA II – Side View

Location of Model

and Serial Number

Air filter

Power switch
Power cord outlet

Cables emerge through

Finger divot for

opening rear

panel

opening here

Figure 1.5: The HFA II – Rear View – See Figure 1.7 for View Without Rear Panel

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INTRODUCTION / INSTRUMENT SETUP 1-13

Forehead rest

Testing bowl

Chin rest

Optional instrument

slider

Blue-Yellow visor handle
(model 745i and 750i)

Trial lens holder

Slider handle

Table height switch

Table with mounted
Printrex printer

Caster

Lock

Figure 1.6: The HFA II – Front View with Instrument Table

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1-14 INTRODUCTION / INSTRUMENT SETUP

ADDITIONAL
COMPONENTS

Many external devices are available to help operate your HFA II. The following is a description
of these devices and how to properly attach them to the HFA II.

Printers Several printers are currently supported by the HFA II:

• Printrex Thermal Line Printers
Table-Mounted Model (standard with HFA II)
Stand-Alone Model (optional)

• Hewlett-Packard LaserJet Printers (optional):
1100 SE, 1200 Series and 3200 SE

• Lexmark Optra E312L Printer

• AeroComm Go Print XL wireless printing accessory

These specific models of the printers were tested for functionality and leakage current
requirements. Other printers may also work with the HFA II i series instrument.

Printrex: Table-Mounted and Stand-Alone Model

1. With power off to the table and HFA II, connect the printer interface cable to the Printer

port on the HFA II. Attach the power cord to the special outlet below the table for the table­mounted Printrex printer. Refer to Figures 1.7, 1.8 and 1.9. The power cord for the stand­alone model plugs into the wall outlet.

2. Insert paper supply. Refer to Section 12: “Loading Paper”.

3. Turn on power to the table. Turn on power to the Printrex printer.

4. Turn on power to the HFA II.

5. From the System Setup screen, select PRINTREX. See Section 2: “Selecting the Printer Type.”

Hewlett-Packard LaserJet

Before you start, check that you have the following supplies:

• HP LaserJet printer • HP printer manual • Printer paper

• Interface cable • Toner cartridge

1. With power off to the HFA II, connect the interface cable to the Printer port on the HFA II

(refer to Figures 1.7 and 1.8) and the printer (refer to Hewlett-Packard printer manual).

2. Install the toner cartridge.

3. Insert paper supply.

4. Connect the printer power cord to the wall outlet.

5. Turn on power to the printer and the HFA II.

6. At the System Setup menu, select HP LASERJET. See Section 2: “Selecting the Printer Type”.

External keyboard The HFA II supports an external keyboard. The keyboard plugs into the back of the HFA II

(refer to Figure 1.7 and 1.8 for the location of the plug).

1. Power off the HFA II (keyboard will not work if connected with power on).

2. Plug in the keyboard.

3. Power on the HFA II.

While many standard PC-type keyboards (must have PS/2-style plug) may be plugged into the
HFA II and should work, we can only guarantee compatibility if we shipped a keyboard to you.
See Section 2: “Using the External Keyboard” for more details.

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INTRODUCTION / INSTRUMENT SETUP 1-15

Trackball, mouse, It is usually possible to use a Microsoft™-compatible serial trackball, mouse, or other external
or other input device input device with your HFA II. These devices may be used as an alternative to pressing the

touch screen. They may be used in conjunction with the optional external keyboard. The
keyboard is not necessary to utilize these devices. For simplicity in describing the feature, the
term “trackball” will be used to represent any compatible input device. The serial trackball
is connected to the Mouse port on the back of the HFA II. The HFA II must be turned off when
attaching or removing any input device. See Section 2 for use of the trackball.

External VGA monitor Your HFA II allows you to connect an external VGA monitor. Commands issued with the

keyboard and trackball / mouse can be seen on the external screen. Touch screen capability is
not available on the external monitor. The HFA II touch screen remains available for use when
using the external monitor. Output to the external monitor will display in black & white, even
when using a color monitor. Connection of the VGA monitor is made to the port found on the
back of the HFA II. See Figures 1.7 and 1.8. Use the VGA connection.

Surge protectors Carl Zeiss Meditec recommends the use of surge protectors or UPS (Uninterruptable

Power Supply) systems to help isolate the HFA II from power surges or fluctuations. The HFA II
is very sensitive to line voltage changes and may experience database problems if subjected to
brownouts, power outages or surges of voltage. Hospitals, surgery centers, and offices with
instruments which consume large amounts of power, such as lasers, should be especially
careful to plug the HFA II directly into a UPS or adequate surge protector. Plugging the power
table into the UPS may not be adequate protection. Carl Zeiss Meditec recommends a
system with a rating of 450 volt amps or greater.

Connection of External devices connect to the HFA II at the rear of the instrument and are hidden from view
external devices behind a panel. Figures 1.7 and 1.8 show the location and identification of many of the

connectors previously mentioned. A diagram next to the panel helps to identify each port.

External input devices such as the glidepad, trackball, mouse and the keyboard need a PS/2
style plug for connection to the HFA II. Use the Data Transfer connection to plug in an HFA I for
serial transfer of data. Also use the Data Transfer port for connection of PC-based communica­tions (Ex: Ensemble). Use the VGA for connection of any external VGA monitor.

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1-16 INTRODUCTION / INSTRUMENT SETUP

Network

Data Transfer

Mouse

Printer

Aux.

Keyboard

VGA

Figure 1.7: Rear View of the HFA II with panel removed

USB

Data Transfer

Network

Printer

Unused

Mouse

Aux.

Keyboard

VGA

Figure 1.8: Enlarged view of cable connections panel on rear of HFA II

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INTRODUCTION / INSTRUMENT SETUP 1-17

SYSTEM
ASSEMBLY

Open rear panel on back of HFA II.

1

Connect printer cable to Printrex

printer and HFA II at rear of unit (see

1

close-up Figure 1.8).

4

7

3

6

1

2

Attach Printrex power cord to

2

special outlet on underside of

table.

Connect power cord from back

3

of HFA II to power outlet on

underside of table.

Attach keyboard and glidepad or

4

trackball / mouse if desired.

Replace rear panel, being careful to
run cables out through slot at bottom
(see Figure 1.5)

Attach power cord at base of table

5

and connect to wall outlet.

Turn on power to the

6

Printrex printer.

Turn on power to the HFA II.

7

5

Figure 1.9: The HFA II – Rear View on Instrument Table

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1-18 INTRODUCTION / INSTRUMENT SETUP

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General Operation

General Information 2-2

The Main Menu Screen 2-9

System Setup 2-10

Additional Setup 2-21

Help Screens 2-23

This section covers general operation of the HFA II. It describes how to execute commands,
input information, and customize the HFA II to suit your needs.

After reading Section 2 you will be familiar with:

2

• command buttons and icons on the HFA II screen

• using the Main Menu screen to select tests

• personalizing printouts with the name of your
practice

• setting the internal clock and calendar

• customizing the test buttons displayed on Main Menu
screen

• using the optional keyboard.

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2-2

GENERAL OPERATION

GENERAL
INFORMATION

Screen simplicity Almost every screen is divided into three areas: the Title Bar, the Screen Body, and the

Icon Buttons.

Title Bar

Floppy disk
drive with
padlock

Command

Buttons

Screen Body

Figure 2.1: Main Areas of the HFA II Screen

The Title Bar

This area is the top portion of every screen. The middle of the title bar displays the name of the
screen in bold type. The left side shows the system software version and the “i” button. More
information about the “i” button appears later in this section. The right side displays the
current date, time, and a picture that shows if the floppy disk in the drive is in use. Do not

insert or remove a floppy disk when the padlock is displayed on the screen as
shown above.

Operator messages may appear in the top right corner of the Title Bar or the center of the
Screen Body to inform you of a condition or alert you to a problem. “Printer is not connected
or Off Line” and “Uninitialized Disk” are examples of operator messages. Multiple messages
may appear stacked and overlapping in the upper right corner. Touching the top message
collapses it, revealing the previous message.

Icon
Buttons

The Screen Body

The Screen Body comprises the largest part of every screen. This is where most of the com­mands are issued via command buttons. The contents of the Screen Body changes after every
command. The Screen Body is referred to as the “screen” throughout the User’s Guide.

Frequently, a button will appear dimmed or “ghosted.” This indicates either that the button
function cannot be activated from that screen or that the button represents a feature that is not
available on the HFA II model being used. For example, the CUSTOM TESTS button on the
model 720i HFA II has been ghosted because this option is not available on the model 720i and
is, therefore, nonfunctional.

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GENERAL OPERATION

Icon buttons These buttons occupy the right side of most screens. Each has a unique function that can be

accessed at any time unless there is a pop-up window present or the icon buttons are ghosted.
See “Pop-up Windows” later in this section for details. The HFA II’s icon buttons are shown
below along with a brief description of their function.

MAIN MENU

The MAIN MENU icon allows you to return to the Main Menu screen from other system screens.

HELP

The HELP icon gives brief explanations of certain features and procedures available on the
HFA II. You should always consult this Guide for further information.

PATIENT DATA

PATIENT DATA leads you to the Patient Data screen where you may enter or recall the patient’s
name, date of birth, I. D. number, trial lens information, and diagnostic data prior to testing.
Main Menu test buttons also automatically lead you to the Patient Data screens.

FILE FUNCTIONS

Through FILE FUNCTIONS you can access the patient test results that have been saved as well
as perform various database management procedures.

2-3

PRINT FUNCTIONS

PRINT FUNCTIONS allows you to print out hard copies of test results in various formats.

SYSTEM SETUP

SYSTEM SETUP lets you define certain user settings. Examples of these are time and date,
printer type, visual acuity format, and practice name and address on printouts. Access to the
SYSTEM SETUP icon is only available from the Main Menu screen.

UNDO

The UNDO icon takes you back to the previous screen. In some cases pressing the UNDO icon
will appear to take you back two screens. This occurs when the previous screen is a pop-up
window. The UNDO icon is not available on the Main Menu screen.

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2-4

GENERAL OPERATION

The information The “i ” button is present on most screens and can be found in the upper left corner of the

“i”

button screen. Pressing this button brings you to the Unit Configuration screen which contains

information useful when contacting Humphrey Customer Service. If the video eye monitor is
displayed, you will need to turn the monitor OFF to access the “i ” button.

The following information is displayed when the “i ” button is pressed:

Model Number
Serial Number
Operating System-Revision Number
Language
Hardware Options
Software Options
Personalized Information such as user’s name, address, and telephone number.

The Unit Configuration information may be printed by pressing the PRINT button. To return to
the previous screen, touch CANCEL.

Figure 2.2: The Unit Configuration Screen.

Touch screen Operating the HFA II is literally at your fingertips. You can perform all functions, whether

entering data or selecting a test, by simply touching a command button on the touch screen.

While using the touch screen, the HFA II is activated when your finger is removed
from the button you select. Be careful not to pound or press too hard against the
touch screen. A light touch works best. An audible beep will alert you of successful button

activation.

If you have difficulty activating the touch screen, consider re-calibrating it. Details on
calibrating the touch screen are found in “Additional Setup” later in this section as well as in
Section 12: “Touch Screen Calibration”.

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