Dyop™ - Dynamic Optotype™

Helping the world see clearly, one person at a time




Consumer Acuity

Infant Acuity Screening













Dyop™ Vision – the vision revolution for seeing clearly


As a culture we are only as good as our memory.  As a species we are only as good as our vision.


A Dyop™ (short for Dynamic Optotype™) is a rotating segmented image whose rotation, viewing distance, diameter, and color contrast creates an innovative vision test based upon retina physiology rather than static image 1862 technology.  Dyop™ vision tests are more precise than static image testing, faster to use, and do not require literacy or the ability to read (let alone the ability to read English). 


Vision quality that was acceptable in 1862 is no longer adequate for 21st century literacy and activity needs


Your eyes developed as survival sensors to detect motion and distance and color and NOT just to determine the difference between static letters such as “E” and “C.”  The photoreceptors in your eye function like electronic pixels so that you see images without noticing that pixel-type response.  Dyop™ images measure vision based upon that photoreceptor pixel-type response.






























1862 Vision Testing


21st Century Vision Testing


Dyop™ tests use spatial triangulation to determine focus by the relative ability to clearly see images at a distance.  Because of spatial triangulation and the retinal preference for detecting motion, the rotation of Dyop™ images seems to disappear at a precise rotation detection threshold as determined by the calibrated Dyop™ image diameter and your viewing distance.  Static images get increasingly blurry as they get smaller or further away and primarily rely on cognition rather than actual acuity.  Conventional static image acuity measurement uses the comparison of images (such as letters) which are supposedly similarly in size and your relative inability to NOT identify (guess) two out of five of those letters.  Rather than enhancing acuity, starring at static letters actually increases visual stress and decision fatigue.


Dyops™ take the guesswork and excess visual stress out of vision testing because you either see the rotation at the rotation detection threshold distance/diameter (your precise end point of acuity/refraction) or you don’t.


Calibrated Dyop™ images are intended as a global replacement for both Snellen and Landolt optotypes.


View how Dyops™ work.


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 earth.

-          Chasidic, 18th Century


 “Any sufficiently advanced technology is indistinguishable from magic.”

- Arthur C. Clarke’s Third Law


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©2013 DyopVision™ Associates.  All Rights Reserved.




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