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Dyop® - Dynamic Optotype™

Helping the world see clearly, one person at a time




Personal Vision Test

Children’s Vision Test

Color Screening

Professional Test


 How it works

Experimental Dyop Test

Visual Impairment

Dyslexia Screening

Using the Test 





“Technology is the use of increasingly accurate, self-evident, and reproducible information to replace energy and matter.

The benefit of technology is NOT in what it lets people accomplish, but in how it improves the character of people.”


The evolution of technology - 1862 vision testing standards are no longer adequate






“Technology is our word for stuff we don’t understand.”

- Douglas Adams


Arthur C. Clarke’s Three Laws:


          1.  “When a distinguished but elderly scientist states that something is possible, he is almost certainly right. 

            When he states that something is impossible, he is very probably wrong.


          2.  The only way of discovering the limits of the possible is to venture a little way past them into the impossible.


          3.  Any sufficiently advanced technology is indistinguishable from magic.”

- Arthur C. Clarke’s Three Laws


         4.  When technology becomes sufficiently obsolete, it becomes an art form.

- Allan’s Corollary


“It is important that students bring a certain ragamuffin, barefoot irreverence to their studies;

they are not here to worship what is known, but to question it.” 
- Jacob Bronowski, “The Ascent of Man


The first rule of science is to challenge your own assumptions.

-       Anonymous



(Web Document)


(Acrobat Document)



From the “Gates of Repentance” Prayer Book:    

“Just as the hand, held before the eye, can hide the tallest mountain, so the routine of everyday life can keep us from seeing the vast radiance and the secret wonders that fill the world.”

                        - Chasidic, 18th Century


The Scientists’ Prayer:

“Blessed art thou, Lord our God, Sovereign of the Universe, who enlightens us with Your Commandments and allows us to use honest weights and measures to better see and understand the Universe and You.”




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@DyopVision.com

5035 Morton Ferry Circle, Alpharetta, GA, 30022   /   404-281-778

Copyright©2023 DyopVision™ Associates.  All Rights Reserved.