Zeiss Humphrey Field Analyser II i-Series User manual 1

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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 (925) 557-4100

(877) 486-7473

www.meditec.zeiss.com

Customer Service (877) 486-7473

In Europe please contact:

Carl Zeiss Jena GmbH

Carl Zeiss Promenade 10

Jena 077405

Germany

Ph: +49-3641-642076

Fax: +49-3641-642155

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)

1Introduction/ Instrument Setup

(18 pages)

2General Operation

(24 pages)

3Setting-up Tests

(24 pages)

4Test Parameters &

Strategies

(16 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

 

 

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

SITATesting

4-10

Blue-Yellow (SWAP) Testing

4-11

Alternate Color Testing

4-16

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5Testing

(18 pages)

6Test Reliability

(8 pages)

7STATPAC Analysis &

Printing Results

(30 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 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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8File Functions

(20 pages)

9Database Management

(22 pages)

10Custom Testing

(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 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

9-22

 

 

 

 

Custom Testing

10-1

 

 

 

 

Creating Custom Tests

10-2

 

 

 

 

Deleting Custom Tests

10-15

 

 

 

 

Performing Custom Tests

10-17

 

 

 

 

Printout Format

10-19

 

 

 

 

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11Kinetic Testing

(62 pages)

12Care & Cleaning

(14 pages)

Appendix

(36 pages)

Index

(6 pages)

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 & 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

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Introduction/Instrument Setup

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

You are about to use the most advanced automated perimeter available, the Humphrey® Field 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.

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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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 detec-

 

tion. 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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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°

 

 

 

Nasal

60°

90°

Temporal

 

 

 

70° Inferior

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”.

FOVEA

BLIND

SPOT

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

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.

P

a

t

 

 

 

 

f

 

 

 

m

 

 

o

 

 

C

 

 

 

t

 

 

 

 

n

 

 

 

e

 

 

 

i

 

 

 

 

ort

e c n

a i l p m

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.

R e

l i

a

b l e R

e

s

u

l

ts

 

t

a

P

 

i

o C

t en

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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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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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 Monitor-

 

 

ing 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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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 presence

 

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.

 

• 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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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

Brightness

Air Intake Filter

USB Port

Serial RS-232

VGA Monitor

Communication Port

 

 

Keyboard

Printer

 

 

Mouse

Floppy Disk Drive

Network

Important Instructions

Fuse

Found in Manual

 

Uninsulated High Voltage

Patient Response

Button

Inside the Instrument

 

Risk of Electric Shock

 

 

Data

Type B Class I

 

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 self-

 

diagnostic 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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INTRODUCTION / INSTRUMENT SETUP

SYSTEM COMPONENTS

 

Touch screen

Chin rest control

Touch screen

brightness control

Hard drive

Patient response button

Floppy drive

Magneto-Optical Drive

Figure 1.4: The HFA II – Side View

Location of Model

 

Finger divot for

 

and Serial Number

opening rear

 

 

 

 

panel

Air filter

 

Power switch

 

Power cord outlet

 

Cables emerge through 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

Forehead rest

Testing bowl

Chin rest

Optional instrument slider

Caster

Lock

1-13

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

Trial lens holder

Slider handle

Table height switch

Table with mounted

Printrex printer

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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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 communica-

 

 

tions (Ex: Ensemble). Use the VGA for connection of any external VGA monitor.

 

 

 

 

 

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Zeiss Humphrey Field Analyser II i-Series User manual 1

1-16

INTRODUCTION / INSTRUMENT SETUP

Data Transfer

Printer

Aux.

VGA

Network

Mouse

Keyboard

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

SYSTEM

ASSEMBLY

1

4

7

3

6

1

2

5

1-17

1Open rear panel on back of HFA II. Connect printer cable to Printrex

printer and HFA II at rear of unit (see close-up Figure 1.8).

2 Attach Printrex power cord to special outlet on underside of

table.

3Connect power cord from back of HFA II to power outlet on

underside of table.

4Attach keyboard and glidepad or trackball / mouse if desired.

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

5Attach power cord at base of table and connect to wall outlet.

6Turn on power to the Printrex printer.

7Turn on power to the HFA II.

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

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INTRODUCTION / INSTRUMENT SETUP

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General Operation

2

 

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:

• 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

Icon

Buttons

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.

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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2-3

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.

 

 

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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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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