OKN Strips can be used to elicit Optokinetic Nystagmus (OKN) for evaluation of neurological, otological or opthalmological disorders, includes a Red Desaturation mode and an Amsler grid for additional eye testing.

OKN Strips:
Click the screen (or use the File menu Bar Controls) to cycle through speeds of the moving strips. Reverse the direction of the strips by using Switch Bar Direction in the Bar Controls menu.

Pinch or Zoom with two fingers, if you have a trackpad, to change the width of the strips. You can also use the File menu Bar Controls to increase and decrease the width of the strips.

Red Desaturation:
Use the colored circle to perform a red desaturation test.

Amsler Grid:
Use the Amsler grid to perform eye tests. The buttons on the top change color combinations of the grid.

What’s New

Version 1.0.1

New Feature - Reverse the direction of the strips using a new menu item, Switch Bar Direction

Ratings and Reviews

4.0 out of 5
1 Rating

1 Rating

143daniels ,

Great, but I can’t share between devices

My vision therapist asked me to download this app for my home therapy. It work well on the computer, but when I tried to download it to my ipad they wanted me to pay again even though it’s the same apple ID. It is a great app though.

Developer Response ,

Hi 143daniels,

Apple runs the Mac App Store and the iOS App Store separately. We have no way of charging you one price for both the Mac app and the iOS app. Perhaps you should contact Apple to let them know you're interested in that feature.



Thomas Alvarez
2.2 MB

OS X 10.10 or later, 64-bit processor



Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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