Dyop® - Dynamic Optotype™

Helping the world see clearly, one person at a time

 

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Professional Use

Links

 

 

 

How it works

 

 

 

You see in Color - NOT just in Black and White.

 

 

 

 

Click HERE for the Laptop and PC
Color Screening Test

Click HERE for the Tablet
Color Screening Test

Click HERE for the SmartPhone
C
olor Screening Test

Adobe Flash format

Acrobat HTML Swiffy  format

 Acrobat HTML Swiffy  format

 

For Dyop® Color Screening select the COMPUTER version of the test.  Move away feet from the identical-diameter rotating color/contrast Dyop® images until you CAN ONLY detect either the rotating Green-on-White Dyop® OR the Blue-on-Black Dyop®.  You can also used the Down Arrows to make the images smaller.  For valid color perception screening, the test should be taken without wearing your glasses or corrective lenses. 

 

For a Tablet or SmartPhone, select the appropriate device from the links above, and then move away from the rotating color/contrast Dyop® images until you CAN ONLY detect either the rotating Green-on-White Dyop® OR the Blue-on-Black Dyop®.    For valid color perception, the test should be taken without wearing your glasses or corrective lenses. 

 

If you can detect only the rotating Green you have Green-Focused Vision (GFV).   If you can detect only the rotating Blue you have Red-Focused Vision (RFV).

 

You may also use the colored animated GIF files on this webpage (below) by moving towards the images and noting when they get sufficiently small as to whether you CAN ONLY detect either the Green-on-White Dyop® OR the Blue-on-Black Dyop®

 

The 8 Dyop® color images below are for use on a Smart Phone

 

 

 

 

 

 

 

 

 

 

Blue

 

Black/White

Green

 

 

 

 

 

The Dyop® images below are for a 10 foot Viewing Distance when the line is 10 inches long

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  Green

 

 

Black/White

 

  Blue              

 

 

IN THEORY, individuals with chromatic dyslexia-type symptoms have Red-Focused Vision (RFV) and have an excess ratio of L (red) photoreceptors in their eyes.  The excess of red photoreceptors induces visual dissonance when reading, thus the symptoms are associated with “slow reading.” 

 

Photoreceptor Response/Distribution

Vision / Photoreceptor Type

Red % (L)

Green % (M)

Blue % (S)

Green-Focused Vision

50

45

5

Red-Focused Vision

75

20

5

                                  

Your comments, feedback, and test results would be greatly appreciated.  Please send them to Allan@Dyop.org.

Note: Dyop® tests are for vision screening purposes only and are NOT a substitute for an examination by a licensed vision care professional.  All of the Dyop® Vision Tests are in an Adobe Flash graphic format and may be viewed using Internet Explorer (with ActiveX enabled) or Google Chrome or Firefox or Safari or other graphic viewers such as Irfanview with the Flash Graphic plug-ins or using the free Adobe Flash Graphic Viewer enabled.  Because the Dyop® tests use Adobe Flash, you will need to install the Photon Browser, to use the tests on an iPad or iPhone.  For use on an Android device, you will need to load Adobe Flash with the Dolphin browser as an “unauthorized app.”

 

The Dyop® (Dynamic Optotype™) tests and concept are covered under U.S. Patent US 8,083,353

and International Published Patent WO 2011/022428.

For further information contact: Allan Hytowitz at Allan@Dyop.org

5035 Morton Ferry Circle, Alpharetta, GA, 30022   /   678-893-0580

Copyright©2015 DyopVision™ Associates.  All Rights Reserved.