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UPDATE: THIS FILE LAST EDITED 7-2016

LOW-VISION

DISPLAYS

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A PUBLICATION FROM THE...

SIGHT LOSS

INFORMATION

DETECTIVE

.....ALL RIGHTS RESERVED

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SHOULD THE READER WANT TO SUGGEST ANY ADDITIONS OR CORRECTIONS FOR THIS BULLETIN, PLEASE SEND YOUR IDEAS - GO TO LINK, SEND A MESSAGE, NEAR THE TOP OF THIS WEBPAGE.

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NOTE: THIS INFORMATION IS NOT INTENDED AS AN ENDORSEMENT OR RECOMMENDATION, AND IS PRESENTED SIMPLY AS A CONVENIENCE TO THE READER. BECAUSE OF THE CHANGING AVAILABILITY OF PRODUCTS AND SERVICES, THE COMPLETENESS OF THIS LISTING IS NOT GUARANTEED.

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THE NATIONAL EYE INSTITUTE ESTIMATES THE WORLD LOW VISION POPULATION AT 135 MILLION, SO THE INCREASE OF HELPING TECHNOLOGY IS VERY IMPORTANT.

A COMPUTER SCREEN SHOWS HARDWARE BRIGHTNESS AND SOFTWARE CONTRAST PLUS RESOLUTION. THE LATTER IS PUSHED TO THE MONITOR IN PIXELS PER INCH BY THE OPERATING SYSTEM.

A NUMBER OF HARDWARE AND SOFTWARE SOLUTIONS ARE POSSIBLE TO PROMOTE FULL AND SMALL SCREEN ACCESSIBILITY FOR PARTIALLY SIGHTED COMPUTER USERS:

1. MONITOR MANUAL-CONTROLS

BESIDES THE OPTION OF SIMPLY USING A LARGER SCREEN, SOME COMPUTER MONITORS PROVIDE FRONT-FACING BUTTONS, SWITCHES, SLIDERS OR KNOBS TO IMPROVE WHAT YOU SEE

2. KEYBOARD COMMANDS

BESIDES THE POSSIBLE NARRATION AID OF A SCREEN READER, CERTAIN APPLICATIONS MAY INCLUDE SEVERAL KEY COMBINATIONS FOR CHANGING THE VIDEO APPEARANCE FULLY OR PARTIALLY, SUCH AS WHITE-ON-BLACK OR BIGGER CURSOR

3. SCREEN ENHANCEMENTS

BESIDES POSSIBLE BUILT-IN TOOLS FOR SYSTEM WIDE OR APP SPECIFIC VISUAL PREFERENCES AND EVEN TOOLBAR OR TASKBAR ENABLED CHANGES, SOMETIMES THIRD PARTY SOFTWARE CAN OFFER VIEWING OPTIONS FOR TEXT SIZE AND TEXT QUALITY

4. MONITOR CONFIGURATION

BESIDES INSTALLING A SCREEN MAGNIFIER PROGRAM, CONSIDER THE LOW VISION HELP FROM...
- SELECT FONT TYPE
- SELECT FONT SIZE
- SELECT BOLD TEXT
- SELECT COLOR SCHEME
- SELECT CURSOR SIZE
- SELECT SPOT MAGNIFICATION
- REVERSE VIDEO
- WARM-COOL COLOR
- HIGH-LOW BRIGHTNESS
- HIGH-LOW CONTRAST
- ZOOM-IN
- ZOOM-OUT

5. HD TECHNOLOGY (HIGH DEFINITION)

BESIDES INTERGRATED OR THIRD-PARTY SEEING OPTIONS, CAREFULLY LOOK FOR WHICH HARDWARE PRODUCTS...

- PROJECTS OVER 300 PPI (PIXELS PER INCH)

- OFFERS BEST BACK-LIGHTING (IF HELPFUL NOT GLARING)
- PROVIDES BEST CONTRAST RATIO (BLACKEST BLACK)
- PRODUCES LOW REFLECTIVITY (NON-GLARE)
- LATEST LED-MONITOR COLOR AND INTENSITY

6. BIG-SCREEN TV

BESIDES BUILT-IN OR ADD-ON COMPUTER VIDEO, ANY DIGITAL TELEVISION MONITOR WITH PC-VGA-RGB PLUG-IN CAN BE CABLED TO EITHER A MACINTOSH OR WINDOWS MACHINE, PLUS TV OFFERS THE POSSIBILITY OF ULTRA HIGH DEFINITION

7. VIEWER RESOLUTIONS

BESIDES ALL OF THE ABOVE, CONSIDER THE OPTIONS LISTED IN YOUR COMPUTER DISPLAY VALUES TABLE
- HIGHER RESOLUTION SHOWS MORE DETAIL AT A SMALLER SIZE
- LOWER RESOLUTION SHOWS LESS DETAIL AT A LARGER SIZE
- HIGHER RESOLUTION SHOWS CRISPER TEXT

8. POSTURE IMPROVEMENT

BESIDES SITTING UP STRAIGHT WHICH IS BEST PRACTICE, IDEAL EYE-TO-SCREEN CENTER ALIGNMENT SHOULD BE 10 TO 20 DEGREES BELOW HORIZON

9. AMBIENT ILLUMINATION

BESIDES NOT FACING ANY WINDOWS...

- ACTUALLY USE BLACK-OUT CURTAINS OR DRAPES, PARTICUALY FOR THE LARGE GLASS OF A PATIO DOOR
- CONSIDER BAD LIGHT ANGLES FROM ADJACENT CEILING FIXTURES

10. READABILITY REMINDER

BESIDES ALL OF THE ABOVE, THE BOTTOM LINE FOR LOW-VISION BEGINS WITH A QUALITY LAYOUT TO MAKE IT EASY TO READ AND UNDERSTAND THE CONTENT ON A COMPUTER DISPLAY

11. IMPORTANT NOTE

USE OF MANUAL CONTROLS MAY REQUIRE SIGHTED ASSISTANCE, ALSO FOR POSSIBLE ADJUSTMENT OF A MULTI-COLOR DISPLAY TO A MORE LOW-VISION FRIENDLY LOOK

12. RESOURCE REFERRAL

LINK: MONITOR PURCHASE
SITE: WWW DOT CNIB DOT ORG
SCROLL TO: HEADING - WHICH MONITOR SHOULD I BUY

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