Introducing the Dyop®

The “Revolutionary” Method for Measuring Visual Clarity (Acuity)

Helping the world see more clearly, one person at a time.

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Sample Dyop Tests

Dyop Self-Tests

A simple experiment to demonstrate that acuity is NOT regulated by the brain but rather is regulated using Chromatic Triangulation of Red, Green, and Blue color sensitive photoreceptors in the fovea of the retina is to close one eye and look around the room where you are now. You will notice that with only one eye open you can still determine the relative distance to nearby objects without the need for binocular vision documenting that acuity is NOT regulated by the brain.

If you wear glasses, a simple test to verify that your lenses are too strong (with too much minus power IF you wear glasses), is to push your glasses about a half inch away from your face and see if the words you are reading become larger and more legible. If you notice that the words get more legible, that Snellen-induced excess minus power of your glasses is typically about 0.25 to 0.50 diopters. While it isn’t much, it reduces your cognition and possibly your IQ by 10 points.

You can verify the hyper-stimulus visual effect by briefly staring at a white light bulb and then closing your eyes. With your eyes closed you should notice a white stimulus ring for an additional ten seconds from the depleted photoreceptor response. The similar computerized hyper-stimulus of the WHITE background for Snellen and other static vision tests is a probable contributor to the visual damage done by using Snellen testing.

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Dyop Visual Acuity (Visual Clarity) Test

Open the acuity (visual clarity) tests below with the links below the static screenshots.

View the spinning Black/White rings at either a five-foot or a ten-foot distance.

Note the smallest pair of identical sized Dyop rings in that test you can detect as spinning.

The center row of numbers between the pair of rings you can detect as spinning

is the measure of your acuity.

(Below are static images of the Dyop Acuity test.)

Dyop Acuity Screening Test for use at 5 feet Dyop Acuity Screening Test for use at 10 feet

Dyop Color Screening Test

Note that dyslexia and similar visual conditions are a holdover from the evolutionary preference for a more stable distance image which impeded a more stable near image. It is not letter-reversal but rather bad letter guessing due to the unstable near image.

See Dyop Basics for the illustrated explanation of Near Vision Stress.

Open the color acuity tests below with the links below the static screenshots.

View the spinning Blue/Black and Green/White spinning rings at either a five-foot or a ten-foot distance.

The smallest colored Dyop ring (Blue/Black or Green/White) detected as spinning indicates your color acuity profile.

Preferentially seeing the Blue/Black rather than the Green/White indicates a

90% probability of symptoms for dyslexia, migraines, or epilepsy.

The center row of numbers between the smallest rings you can detect as spinning

is the measure of your color acuity.

(Below are static images of the Dyop Color Screening test.)

Dyop Blue/Green Visual Screening Test - 5 feet ======- Dyop Blue/Green Visual Screening Test - 10 feet
Dyop Blue/Green Visual Screening Test - 5 feet ======- Dyop Blue/Green Visual Screening Test - 10 feet

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Dyop Cognition-Impairment Test

A Dyop may also be used to evaluate the cognitive impairment associated with conditions such as

marijuana intoxication, PTSD, concussion injuries, and other difficulties such as Alzheimer’s and Parkinson’s

https://www.dyop.net/documents/Dyop_Cognition_Test.html

Use the link above to open the Dyop Cognition-Impairment test.

Note that THIS is a Timed Test. Click the word “Start” at the top of the test to begin.

Additional details are at: https://www.dyop.net/impairment.htm

(Below is a static image of the START screen for the Dyop Cognition-Impairment Test.)

Note that when the Cognition Test starts, there will be FIVE Dyops on the screen but ONLY ONE of them will be spinning.

Use a computer mouse or touch screen to click the arrow adjacent (Left or Right) of the SINGLE

spinning Dyop to indicate its spin direction.

THAT Dyop will stop spinning, but ONE of the other FOUR Dyops will then start spinning.

Click the arrow adjacent to that next spinning Dyop to indicate its spin direction.

The timed test consists of ten selection trials for detecting which one of the Dyops is spinning.

(Below is a static image of the INITIAL screen for the Dyop Cognition-Impairment Test.)

When you have found and detected ALL TEN of the sequential spinning Dyop test response trials, the screen will

display the number of Correct Selections and the elapsed Test Time.

A test completion time of 14 to 16 seconds with 10 correct responses indicates cognition alertness.

A test completion time of 21 to 26 seconds with less than 10 correct responses indicates minor cognition impairment.

A test completion time of 28 to 32 seconds with less than 8 correct responses indicates increased cognition impairment.

A test completion time of 35 to 40 seconds with less than 6 correct responses indicates significant cognition impairment.

(Below is a static image of a typical FINAL response screen for the Dyop Cognition-Impairment Test.)

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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, Johns Creek, GA, 30022 / 404-281-7798