HUMPHREY FDT Visual Field Instrument Users Guide

Patents USA 5,065,767, Australia 611,585 Patents Pending in USA and other countries.

Trademarks Humphrey is a registered trademark of Zeiss Humphrey Systems in the United States and other countries. Welch Allyn is a registered trademark of Welch Allyn, Inc. in the United States and other countries. Every effort has been made to ensure that the information contained in this manual is true and correct at the time of printing. Any errors and omissions are unintentional and will be corrected in future revisions. Copyright

‹#

2000 Welch Allyn, Inc. All rights reserved.

TABLE OF CONTENTS 1 PLEASE READ IMPORTANT SAFETY INFORMATION... 1

2 INTRODUCTION ABOUT THE USER’S GUIDE... 3 INSTRUMENT OVERVIEW... 3 INSTRUMENT COMPONENTS... 5 FDT OVERVIEW... 5

3 OPERATING PROCEDURES UNPACKING... 7 PREPARATION FOR USE AND POWER ON... 8 PREPARING FOR A PATIENT TEST... 11 RUNNING A SCREENING OR THRESHOLD PATIENT TEST... 14 DISPLAYING & PRINTING THE TEST RESULTS... 17 USING THE RS-232 SERIAL COMPUTER INTERFACE... 18 UNDERSTANDING THE SCREENING TEST RESULTS... 18 UNDERSTANDING THE FULL THRESHOLD TEST RESULTS... 19 SCREENING C-20 TEST RESULTS SAMPLE... 22 THRESHOLD C-20 TEST RESULTS SAMPLE... 23 THRESHOLD N-30 TEST RESULTS SAMPLE... 24

4 CALIBRATION AND SET-UP, MAINTENANCE AND TROUBLESHOOTING CALIBRATION AND SET-UP... 25 Set Date and Time... 25 Set-up Instrument Options... 26 Calibration... 27 Software Upgrade... 28

MAINTENANCE... 28 Printer Paper Replacement... 28 Replacement Parts and Accessories... 30 Product Model Numbers (710 SERIES)... 30 Cleaning, Disinfection and Sterilization... 31

TROUBLESHOOTING... 31

5 WARRANTY AND SERVICE INFORMATION WARRANTY INFORMATION... 33 SERVICE INFORMATION... 33 Technical Assistance Information... 33

6 TECHNICAL SPECIFICATIONS INSTRUMENT SPECIFICATIONS... 35 ENVIRONMENTAL SPECIFICATIONS... 35 TEST SPECIFICATIONS... 36 STANDARDS COMPLIANCE... 37

FDT QUICK REFERENCE GUIDE

PLEASE READ

1

PLEASE READ

IMPORTANT SAFETY INFORMATION All operating personnel should be familiarized with the general safety information in this summary. Additional safety information may also be found throughout this manual.

is intended to alert the ATTENTION - refer to the operating instructions.This symbol operating personnel to the presence of important operating or maintenance instructions in the documents accompanying the instrument.

OPERATING VOLTAGE SELECTION - select the desired operating voltage range, either 115V or 230V, before connecting the power cord to the appliance inlet connection and before applying power to the instrument. Be sure the proper fuse values are used for each voltage setting. Refer to the Preparation for Use and Power On section of this manual for instructions to change the Voltage Selector position.

FUSE REPLACEMENT- For the 115V voltage selector position, replace the fuses with TYPE T .315A 250V. For the 230V Voltage Selector position, replace the fuses with TYPE T .160A 250V. Refer to the Preparation for Use and Power On section of this manual for instructions to inspect or change the fuses.

SERVICE or REPAIR to be performed by QUALIFIED, AUTHORIZED PERSONNEL ONLY. There are NO USER SERVICEABLE PARTS INSIDE the instrument. Disassembly of the instrument beyond the extent required to change the PRINTER PAPER, FUSES, or PATIENT RESPONSE BUTTON as described in this manual presents a possible ELECTRICAL SHOCK hazard and will VOID the warranty.

REPLACEMENT PARTS and ACCESSORIES- Use only approved replacement parts and accessories specified in this manual. Refer to the maintenance section of this manual for more information.

MAINS DISCONNECT- Disconnect from the mains via the appliance inlet.

POWER CORD- Use an approved hospital-grade power inlet cord only.

DO NOT STERILIZE the instrument or any of its components.

After unpacking the instrument, pull down the printer door (below the LCD display), using the finger cutouts on the sides of the door (near the top), and remove the foam shipping wedge BEFORE using the printer. Close the printer door. Be sure the paper is sticking out through the slot in the door. Failure to remove the shipping wedge will result in improper operation of the printer.

DO NOT USE the instrument near other equipment which produces strong magnetic fields (such as MRI). The video monitor performance may be adversely affected.

HUMPHREY FDT VISUAL FIELD INSTRUMENT REV. D 01/00 PN 112098-1

PLEASE READ/ 1

PLEASE READ

LCD DISPLAY CONTRAST - Use the UP and DOWN arrows adjacent to the contrast symbol below the LCD display to adjust the LCD contrast for optimum viewing, based on lighting conditions.

TYPE BF - Indicates this is a Type B product with Type BF applied parts; the patient forehead rest and patient response Button.

SHIPPING and STORAGE TEMPERATURE range - Limit the temperatures the instrument is exposed to between -20° C (-4° F) and +49° C (+120° F) to avoid possible damage to the instrument. Refer to the environmental specifications section of the manual for more information.

Patient Response Button Connector Computer Interface Connector

Software Upgrade Connector

R E F 71 0 SE R I E S 11 5 V / 2 3 0 V

5 0 / 6 0 H z 3 15 mA / 1 6 0 mA

UL IE C CSA N O.

2601 6 01 -1 C2 2 .2 6 01 -1

7422 7 PA T. PE ND . M A D E I N U .S .A .

PATIENT RESPONSE BUTTON CONNECTOR - Connect ONLY the patient response button supplied with the instrument or an approved replacement to the patient response button connector on the bottom of the instrument. Connection of any other device to the patient response button connector may damage the instrument or create an unsafe condition and will void the warranty.

COMPUTER INTERFACE CONNECTOR - Connect ONLY RS-232 serial compatible computer ports to the computer interface connector on the bottom of the instrument. Use the null-modem configuration computer interface cable supplied with the instrument or an approved replacement cable. Connection of any other computer port or device to the computer interface connector may damage the instrument. Refer to the computer interface instructions for additional information.

SOFTWARE UPGRADE CONNECTOR - The blank label on the bottom of the unit adjacent to this symbol covers the SOFTWARE UPGRADE CONNECTOR. The blank label should only be removed during a software upgrade and should be replaced when the upgrade is complete. Refer to the software upgrade instructions to update the instrument software.

2 / PLEASE READ

HUMPHREY FDT VISUAL FIELD INSTRUMENT REV. D 01/00 PN 112098-1

2

INTRODUCTION

ABOUT THE USER’S GUIDE

INSTRUMENT OVERVIEW The FDT Visual Field Instrument is an innovative, efficient, compact and affordable automated visual field testing instrument. Years of research and clinical trials of Welch Allyn’s patented FREQUENCY DOUBLING TECHNOLOGY have resulted in an instrument which provides rapid, clinically validated and user-friendly visual field testing. Key features of the FDT Visual Field Instrument include: • Supra-threshold screening tests in less than 1 minute per eye •

Full-threshold tests in approximately 4 minutes per eye

•

Easy to use; no special training is needed/minimal operator instruction

•

No corrective (trial) lens needed; patients can wear their own correction or none at all (must only be within 7D of patient’s refraction

•

No eye patch needed for the opposite (untested) eye - it’s automatically occluded

•

Not affected by ambient lighting - can be used in normal room lighting

•

Not affected by pupil size (as small as 2 mm)

•

Extensive age-normative reference database incorporated

•

World-class clinical validation by leading researchers in the field

•

Statistically significant correlation to the Humphrey Field Analyzer

•

Software upgrade capability for future enhancements

HUMPHREY FDT VISUAL FIELD INSTRUMENT REV. D 01/00 PN 112098-1

INTRODUCTION/ 3

INTRODUCTION

The USER’S GUIDE is designed to help you understand the capabilities and operation of the Humphrey FDT Visual Field Instrument with Welch Allyn’s FREQUENCY DOUBLING TECHNOLOGY. To achieve satisfactory results, the operator should read this manual thoroughly before using the instrument. An FDT Quick Reference Guide is provided for the convenience of experienced operators.

PATIENT’S SIDE INSTRUMENT COMPONENTS Forehead Rest Calibration Cap

Patient Eyepiece

Power Cord Voltage Selector Indicator

Power Switch 4489

INTRODUCTION

Patient Visor

Patient Response Button

Power Cord Inlet

OPERATOR’S SIDE INSTRUMENT COMPONENTS

Operator Control Panel

Operator Buttons (Blue)

Operator LCD

Cancel/Backup Button (Green)

Operator LCD Display Contrast Adjustment Buttons Printer Paper Paper Access Door Finger Tab

Paper Access Door Finger Tab Paper Access Door

Paper Printout Slot

Paper Release Lever

4 / INTRODUCTION

HUMPHREY FDT VISUAL FIELD INSTRUMENT REV. D 01/00 PN 112098-1

INSTRUMENT COMPONENTS

Further below the Operator LCD Display is a Paper Access Door which opens to provide access to the internal thermal printer for replacement of paper, when needed. The instrument has a sliding Patient Visor which aids in the selection of the eye to be tested and automatically occludes the opposite (untested) eye. Detachable Patient Response Button, Power Cord, and Calibration Cap are also provided.

FDT OVERVIEW FDT isolates a subset of retinal ganglion cell mechanisms in the magnocellular (M-cell) pathway. These M-cells have large diameter fibers and comprise only 3% to 5% of all retinal ganglion cells. The damage of these cells in the disease process makes FDT efficient and effective for the detection of visual field loss.

HUMPHREY FDT VISUAL FIELD INSTRUMENT REV. D 01/00 PN 112098-1

INTRODUCTION/ 5

INTRODUCTION

The instrument has seven Buttons to control the operation of the instrument, located adjacent to the Operator’s Liquid Crystal Display (LCD). • Four BLUE Operator Buttons along the left side of the Operator LCD Display • A GREEN Cancel/Backup Button below the four BLUE Buttons • Two Operator LCD Display Contrast Adjustment Buttons (Down Arrow and Up Arrow) adjacent to the Contrast Symbol and directly below the LCD Operator Display

INTRODUCTION

PATIENT’S VIDEO SCREEN PATTERNS

6 / INTRODUCTION

HUMPHREY FDT VISUAL FIELD INSTRUMENT REV. D 01/00 PN 112098-1

3

OPERATING PROCEDURES

UNPACKING This instrument is designed for use by anyone familiar with the operation as described in this manual; no special qualifications are required. Anyone using this instrument should read and understand the operating instructions manual before using the instrument. Interpretation of the results should be performed only by appropriately trained eyecare professionals. Open the shipping box by carefully cutting the packing tape securing the top flaps of the box. Lift out the foam insert containing the Patient Response Button, Power Cord and extra roll of paper. Lift the instrument out of the remaining foam insert by grasping the instrument at the two cutouts provided and set the instrument on a flat, stable surface. Remove the plastic bag from the FDT Visual Field Instrument. Use of an adjustable height chair and/or table is recommended when performing testing.

RETAIN THE SHIPPING MATERIALS (BOX AND PACKAGING) IN THE EVENT OF SHIPPING DAMAGE OR FOR RETURN, IF NECESSARY, TO AN AUTHORIZED SERVICE OR DISTRIBUTION LOCATION AT ANY TIME IN THE FUTURE.

After unpacking the instrument, pull down the Paper Access Door (below the LCD display) using the Finger Tabs on the sides of the door. Remove the foam shipping wedge before using the printer. Close the Paper Access door while guiding Printer Paper through the Paper Slot in the door. Failure to remove the shipping wedge will result in improper operation of the printer.

Paper Access Door Finger Tab

HUMPHREY FDT VISUAL FIELD INSTRUMENT REV. D 01/00 PN 112098-1

Paper Access Door Finger Tab

OPERATING PROCEDURES / 7

OPERATING PROCEDURES

After you have unpacked the instrument and its components, confirm that you have received the following items in good condition: • Humphrey FDT Visual Field Instrument • Calibration Cap (covering the Patient’s Eyepiece inside the Patient Visor) • Patient Response Button • Power Cord (appropriate for local operating voltage) • Extra roll of paper

PREPARATION FOR USE AND POWER ON Patient Side

R E F 71 0 SE R I E S

Tip

11 5V /2 3 0V

5 0 /60 Hz 3 1 5 m A /16 0 m A

7422 7

Operator Side

While facing the Patient Side of the FDT instrument, tilt the instrument to plug the Patient Response Button connector into the small round connector jack. The jack is located underneath the base of the unit (at the center) and near the patient response button symbol . OPERATING VOLTAGE SELECTION - select the desired operating voltage range, either 115V or 230V, before connecting the power cord to the appliance inlet connection and before applying power to the instrument. Be sure the proper fuse values are used for each voltage setting. Before connecting the Power Cord and before applying power to the instrument, be sure the Voltage Selector Indicator adjacent to the O/I Power Switch displays the appropriate operating voltage (115V or 230V).

11 5 V-T 3 1 5 L 2 3 0 V -T 1 6 0 L 11 5V

OPERATING PROCEDURES

UL 2 601 IEC 601-1 C SA C 2 2 . 2 N O . 601-1

PAT. P EN D. MA DE I N U. S.A .

Voltage Selector Indicator

To change the Fuse Carrier/Voltage Selector to the proper operating voltage be sure the Power Cord is NOT connected and use a flat screwdriver to pry open the Fuse Drawer Cover. Remove the

8 / OPERATING PROCEDURES

HUMPHREY FDT VISUAL FIELD INSTRUMENT REV. D 01/00 PN 112098-1

Fuse Carrier/Voltage Selector, by again using a flat screwdriver, noting the placement of the fuses before removing them. Remove and replace both uses, by carefully prying them out and replacing them with the value indicated on the fuse replacement label (for 115V use TYPE T .315A 250V fuse and for 230V fuse TYPE T .160A 250V fuse). Rotate the Fuse Carrier/Voltage Selector so the proper voltage will be visible when the Voltage Selection Door is closed. Re-install the Fuse Carrier. Close the Fuse Drawer Cover and check to be sure the proper voltage appears in the Voltage Selection Window. Refer to the Replacement Parts and Accessories section of this manual for fuse part numbers and ordering information. Power Switch

4489

5639

3565

Fuse Drawer Cover

5639

4489

$

3565

Selected Voltage

HUMPHREY FDT VISUAL FIELD INSTRUMENT REV. D 01/00 PN 112098-1

OPERATING PROCEDURES/ 9

OPERATING PROCEDURES

Fuse Carrier/Voltage Selector

Plug the appropriate approved hospital grade detachable Power Cord into the Power Cord Inlet on the operator’s right-hand side and plug the opposite end into a standard power outlet.

4489

448907648/ 563907493/

OPERATING PROCEDURES

Power Switch

Power Cord Inlet

To turn the instrument ON, switch the Power Switch (O/I), adjacent to the power connector, to the ON (I) position. The instrument will perform internal self-diagnostic checks and after approximately 15 seconds, two double beeps will sound and the FDT MAIN MENU will appear on the Operator LCD Display. Refer to the troubleshooting section of this manual if the FDT MAIN MENU does not appear.

Note: You may need to adjust the LCD contrast in order to read the Operator LCD Display; use the triangle shaped buttons below the Operator LCD Display to increase (up-arrow) or decrease (downarrow) the LCD contrast.

FREQUENCY DOUBLING TECHNOLOGY MAIN MENU RUN PATIENT TEST

RUN DEMONSTRATION

ADVANCE PAPER

UTILITIES MENU 24 JUN 1997 04:08 PM

Increase Contrast Return to Main Menu

Decrease Contrast

Note: the GREEN Button may be used at any time to back-up to the previous menu and to return to the FDT MAIN MENU (it may need to be pressed several times to reach the FDT MAIN MENU.

10 / OPERATING PROCEDURES

HUMPHREY FDT VISUAL FIELD INSTRUMENT REV. D 01/00 PN 112098-1

PREPARING FOR A PATIENT TEST Remove the CALIBRATION CAP from the Patient Eyepiece. Replace the calibration cap on the Patient Eyepiece when the instrument is not in use to minimize the accumulation of dust and debris in the Patient Eyepiece. Select RUN PATIENT TESTS from the FDT MAIN MENU to prepare for a SCREENING C-20 TEST, FULL THRESHOLD C-20 TEST or a FULL THRESHOLD N-30 TEST.

FREQUENCY DOUBLING TECHNOLOGY MAIN MENU RUN PATIENT TESTS

ADVANCE PAPER

UTILITIES MENU 24 JUN 1997 04:08 PM

Note: Once RUN PATIENT TESTS is selected, typical FDT stimulus presentations are automatically displayed to demonstrate the test to the patient until the test actually starts.

HUMPHREY FDT VISUAL FIELD INSTRUMENT REV. D 01/00 PN 112098-1

OPERATING PROCEDURES/ 11

OPERATING PROCEDURES

RUN DEMONSTRATION

Enter the Patient’s Age The unit will start with an AGE of 50 years. Select +10 YEARS (TOP BLUE Button) to increase the AGE by 10 year increments (e.g. to 60, 70, and so on). Select -10 YEARS (2nd BLUE Button from the top) to decrease the AGE by 10 year increments. Select + 1 YEAR (3rd BLUE Button from the top) to increase the AGE in 1 year increments to adjust to the exact age of the patient (e.g. 51, 52, and so on). Select ACCEPT SETTING (BOTTOM BLUE Button) when the correct AGE is displayed.

ENTER PATIENT AGE +10 YEARS AGE: 50 - 10 YEARS

OPERATING PROCEDURES

+1 YEAR

ACCEPT SETTING 24 JUN 1997 04:08 PM

Slide the Patient Visor to the right eye test position (this is to your right when looking at the patient from the operator’s side). Note: If you want to skip the right eye (i.e., only test the left eye), then slide the Patient Visor to the left eye test position now (this is to your left when facing the patient from the operator’s side) and select SKIP RIGHT EYE.

Prepare the Patient Place the Patient Response Button in the patient’s hand and show them how to press it. Ask the patient to place their forehead on the Forehead Rest and look into the Patient Eyepiece at the video screen. Adjust the height of the chair or table (or both) to obtain a comfortable position for the patient. Confirm that the patient can see the entire lit video screen, including all four corners, in the Patient Eyepiece and the black dot in the middle of the screen. Note: Be sure the patient is positioned comfortably (not hunched over) by adjusting the height of the chair or table (or both).

Patient Refraction The FDT test may be taken with or without the patient’s correction (if the patient is within 7D of their refraction). If a patient is wearing glasses, confirm that their glasses frame does not obscure any of the lit portion of the display. Ask the patient to remove their glasses for the test if their lenses or contact lenses are tinted or change contrast based on lighting conditions (photochromatic). Tests may be taken with bifocal or progressive lenses (unless the progressive lenses have more than 3D equivalent sphere distance correction).

12 / OPERATING PROCEDURES

HUMPHREY FDT VISUAL FIELD INSTRUMENT REV. D 01/00 PN 112098-1

Explain the Test Procedure to the Patient “A demonstration of the test is running now. Can you see the black dot in the center and the entire lit video screen? You need to stare at the black dot in the center of the screen during the entire test.” “From time to time, you will see patterns of flickering black and white vertical bars that will briefly appear in different areas of the screen. The patterns will sometimes be very faint and at other times be very distinct. You are not expected to see the bar patterns at all times. Each time you see the flickering black and white vertical bars of one of the patterns, press the response button once. Can you see these patterns in the demonstration running now? You may practice now by pressing the Button to respond to the patterns.” “It is OK to blink and a good time to blink is when you press the response Button. If you need to rest or ask questions during the test, you can pause the test at any time by pressing and holding down the response Button. Do you have any questions? Do you understand how to take the test?”

HUMPHREY FDT VISUAL FIELD INSTRUMENT REV. D 01/00 PN 112098-1

OPERATING PROCEDURES/ 13

OPERATING PROCEDURES

“I will now start the test. There will be a few brief flashes and then the test will begin. Press the response Button once each time you see the flickering black and white vertical bars of one of the patterns, even if the bars are very faint. Please remember to stare at the black dot in the center of the screen during the entire test.”

Note: A separate DEMONSTRATION test is available from the FDT MAIN MENU to help facilitate the patient’s understanding of the test, if needed. To run a practice test, select RUN DEMONSTRATION (2nd BLUE Button from the top) from the FDT MAIN MENU. A demonstration of the test stimulus automatically begins. The patient should use this time to become familiar with the test and practice using the PATIENT RESPONSE BUTTON (Ask the patient to look into the Patient Eyepiece within the Patient Visor and then test the procedure.) Press the GREEN Button to cancel the practice test and return to the FDT MAIN MENU.

FREQUENCY DOUBLING TECHNOLOGY MAIN MENU RUN PATIENT TESTS

OPERATING PROCEDURES

RUN DEMONSTRATION

ADVANCE PAPER

UTILITIES MENU 24 JUN 1997 04:08 PM

Be sure to prepare the patient as described above before running a practice test.

RUNNING A SCREENING OR THRESHOLD PATIENT TEST Select either RUN SCREENING TEST C-20, RUN FULL THRESHOLD C-20 TEST or RUN FULL THRESHOLD N-30 TEST from the RIGHT EYE TEST MENU. The right eye test will begin immediately after a momentary check for proper calibration.

RIGHT EYE TEST MENU RUN SCREENING C-20 TEST

RUN FULL THRESHOLD C-20 TEST

RUN FULL THRESHOLD N-30 TEST

SKIP RIGHT EYE GRN BUTTON CANCELS

24 JUN 1997 03:55 PM

Note: To skip the right eye test and proceed directly to the left eye test, select SKIP RIGHT EYE (BOTTOM Operator Button from the top) before selecting a SCREENING or THRESHOLD test. Note: The Operator LCD Display will indicate if there is too much ambient light to perform a reliable test. Lower the room lighting or change the test location until suitable test conditions are achieved.

14 / OPERATING PROCEDURES

HUMPHREY FDT VISUAL FIELD INSTRUMENT REV. D 01/00 PN 112098-1

Also, if the Patient Response Button is not connected or the Patient Visor is in the wrong eye position, this will be indicated on the Operator LCD Display.

FULL THRESHOLD C-20 TEST (RIGHT EYE) PERCENT COMPLETE:

2% PATIENT RESPONSE : N FIXATION ERRS : 0/0 FALSE POS ERRS : 0/0 FALSE NEG ERRS : 0/0

GRN BUTTON PAUSES

24 JUN 1997 04:05 PM

Note: You can PAUSE or RE-START the test by pressing the GREEN Button at any time during the test. Follow the Operator LCD Display instructions to CONTINUE TEST or to RE-START TEST from a pause. The patient can also PAUSE the test (for a break, etc.) by simply pressing and holding down the Patient Response Button. The test will resume automatically once the patient releases the Patient Response Button. During patient pause, you may also select OPERATOR PAUSE (GREEN Button) so that the test will remain paused until you restart it. Note: A SCREENING C-20 TEST takes less than 1 minute (per eye) to complete, a FULL THRESHOLD C-20 TEST takes approximately 4 minutes (per eye) to complete and a FULL THRESHOLD N-30 TEST takes about 4-1/2 minutes.

HUMPHREY FDT VISUAL FIELD INSTRUMENT REV. D 01/00 PN 112098-1

OPERATING PROCEDURES/ 15

OPERATING PROCEDURES

The PERCENT COMPLETE scale, field location being tested, PATIENT RESPONSE, FIXATION ERRORS, FALSE POS ERRORS and FALSE NEG ERRORS are displayed on the Operator LCD Display during the test. Remind the patient to keep looking at the dot in the middle of the screen and inform them of the approximate percent complete at 3 or 4 times during the test to encourage good patient compliance. Monitor the catch trials (FIXATION ERRS, FALSE POS ERRS, and FALSE NEG ERRS) during the test. The catch trial display fields will be highlighted on the Operator LCD Display if 2 or more catch trials have been responded to by the patient. A high ratio on any of the catch trials indicates unreliable results and that the test should be restarted or repeated.

At the end of the right eye test, the Operator LCD Display will prompt for a left eye test. Slide the Patient Visor to the left eye test position (this is to your left when facing the patient from the operator’s side). Prepare the patient. Select RUN SCREENING C-20 TEST (TOP Operator Button), RUN FULL THRESHOLD C-20 TEST (2nd Operator Button from the top), or RUN FULL THRESHOLD N-30 TEST (3rd Operator Button from the top) from the LEFT EYE TEST MENU to begin the left eye test immediately after a momentary check for proper calibration.

LEFT EYE TEST MENU

OPERATING PROCEDURES

RUN FULL THRESHOLD C-20 TEST

SKIP LEFT EYE GRN BUTTON CANCELS

24 JUN 1997 04:10 PM

Note: To skip the left eye test, select SKIP LEFT EYE (BOTTOM Operator Button) to proceed to the results menu.

16 / OPERATING PROCEDURES

HUMPHREY FDT VISUAL FIELD INSTRUMENT REV. D 01/00 PN 112098-1

DISPLAYING & PRINTING THE TEST RESULTS You can both view the results on the Operator LCD Display and print them out from the test results menu. At the end of a test, the results will be automatically printed (default set-up is automatic printing) and then the test results menu will automatically appear on the Operator LCD Display. Select either VIEW RIGHT EYE RESULTS (3rd Operator Button from the top) or VIEW LEFT EYE RESULTS (BOTTOM Operator Button) to view the individual eye results for the patient just tested on the Operator LCD Display. Use the GREEN Button to back-up to the previous screen to allow you to toggle between the eye results or to return to the FDT MAIN MENU (press it twice if necessary). Select PRINT REPORT (TOP Operator Button) to obtain additional copies of the results for the patient just tested (you can print as many copies as you’d like).

TEST DATE/TIME: 24 JUN 1997 04:05 pm PATIENT AGE: 50

ADVANCE PAPER

VIEW RIGHT EYE RESULTS

RIGHT EYE: TEST DURATION: 03:40 LEFT EYE: TEST DURATION: 04:17

VIEW LEFT EYE RESULTS

24 JUN 1997 04:20 pm

Note: Once the test is completed, you can also select LAST PATIENT RESULTS (3rd Operator Button from the top) from the FDT MAIN MENU to display or print out the results of the patient just tested. The results of the most recently tested patient will remain in memory only until you

begin a new test or until the instrument power is turned off.

HUMPHREY FDT VISUAL FIELD INSTRUMENT REV. D 01/00 PN 112098-1

OPERATING PROCEDURES/ 17

OPERATING PROCEDURES

FULL THRESHOLD C-20 PRINT REPORT