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In the valley of the blind, the one-eyed man is king.




Progressive Dyslexia

Progressive Lenses



Dyop Test


What you actually "see" with progressive glasses

The narrow field of vertical undistorted vision lets wearers of progressive glasses clearly see only a narrow vertical strip of text.  Moving their head lets them move that undistorted area around the page on the screen, but the reduced peripheral vision makes it difficult to efficiently comprehend text and concepts.  (Yes, the distortion below IS exaggerated to make the point more obvious.)


Dyop™ Peripheral Distortion Test

Requires (free) Adobe Flash to run

Provides a quantitative measure of the loss of peripheral vision


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