Dyop® - Dynamic Optotype™

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Dyop® tests provide Eye Care Professionals with “better patients” and less stress

 

Dyop® Visual Acuity/Refraction Test

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Dyop® On-Line Professional Test Users’ Guide

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Dyop® ColorMatrix™ Response Form

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Dyop® Off-Line Professional Visual Acuity Test

Contact Allan@Dyop.org for details and a free evaluation copy

 

Dyop® Off-Line Test Professional Implementation Guide

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The Dyop® Professional Visual Acuity/Refraction Test is intended to be a faster and more precise replacement for the Snellen, Sloan, and Landolt tests for determining both visual acuity and refraction end-points.  The simplest method for using the Dyop® test at a virtual 20 foot viewing distance is to utilize a mirror 9 feet in front of the patient displaying Dyop® images which are reflections of the images on a monitor situated 2 feet behind the patient thus creating a virtual 20 foot Viewing Distance.

 

The Dyop® Professional Visual Acuity Test is calibrated for use on virtually any computer monitor or a 10 inch computer tablet.  The image sizes can also be further adjusted for your specific monitor size. 

 

The tests are intended to be viewed at a (virtual) viewing distance of 20 feet.  They can be customized to meet the specific needs or actual viewing distance as used by the eye care professional.  The instructions are currently available only in English, but the test image optotypes do NOT require literacy, or even verbal ability, but rather only the ability to indicate the detection of rotation.  (The specific direction of rotation as to clockwise or counter-clockwise is also irrelevant.)

 

Use the mouse scroll wheel to increase or decrease the Dyop® image angular diameter.  Selecting the smallest Dyop® image detected as rotating will immediately determine acuity.  When the sphere or cylinder lenses are over or under minused, or when the axis vector is misaligned, that non-optimum setting will increase the angular diameter of the smallest detectable rotating Dyop® image.  Dyop® images that are only “twinkling” are NOT rotating. 

 

On-Line Dyop® Professional Test Users’ Guide

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The Dyop® Doublet images below are static image screen shots, and NOT the actual test.

 

Welcome Screen

Calibration Screen – Viewing Distance and Monitor Size

Click the Dyop® logo to start the test

Initial Dyop® Arc Width 19.2 – Snellen 20/102

Blank the controls with the Space Bar

Dyop® Arc Width 57.2 arc minutes – Snellen 20/702

Dyop® Arc Width 11.3 arc minutes – Snellen 20/40

Dyop® ColorMatrix™ color/contrast options

Red/Green Color Balance

Color Group Screening

 

Dyop® ColorMatrix™

Black-on-White

White-on-Gray

Black-on-Gray

Gray-on-Black

Gray-on-White

Red-on-White

 

 

Green-on-White

Blue-on-White

Red-on-Gray

Green-on-Gray

Blue-on-Gray

Red-on-Black

Green-on-Black

Blue-on-Black

 

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

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