Nystagmus test
Very helpful and useful
$1.99
About
This app allows users to observe and experience optokinetic nystagmus (OKN) by displaying a customizable moving stripe pattern on their smartphone screen. Users can record their eye movements with the front camera for later review, making it a useful tool for medical, educational, and general interest purposes.
✓Adjustable stripe width
✓Adjustable moving speed
✓Customizable stripe color
✓Record eye movements with front camera
✓Preview/review tool for medical settings
✓Visual teaching material
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What's New in OKN Viewer
1.5
September 27, 2026
We've made OKN Viewer even easier to use. - Added support for moving stripes in four directions: up, down, left, and right - You can now quickly review your latest video after recording - Microphone access is no longer required for recording - Made additional usability improvements Thank you for using OKN Viewer.
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FAQ
What is OKN Viewer?
OKN Viewer is a medical app designed to help users observe and experience optokinetic nystagmus (OKN) by displaying a moving stripe pattern on their device's screen. It also allows for the recording of eye movements using the front-facing camera.
Is OKN Viewer a medical device?
No, OKN Viewer is not a medical device. It is intended for observation, learning, and experiencing nystagmus, not for diagnosis or treatment. For any medical concerns, consult a qualified healthcare professional.
What are the main features of OKN Viewer?
Key features include adjustable stripe width, customizable moving speed, adjustable stripe color, and the ability to record eye movements with the front camera for later review.
Who is OKN Viewer recommended for?
It is recommended for physicians, medical students, orthoptists, nurses, rehabilitation staff, clinical laboratory technologists, teachers, and students interested in visual effects and how the body reacts to them.
Does OKN Viewer have advertisements?
No, OKN Viewer does not contain any advertisements, providing an uninterrupted user experience.
What is the price of OKN Viewer?
OKN Viewer is a paid application, priced at $1.99. There are no in-app purchases or subscriptions.
What devices is OKN Viewer compatible with?
OKN Viewer is compatible with iPhone and iPad devices.
How often is OKN Viewer updated?
The app was last updated on February 19, 2026, indicating a recent update. The developer typically releases updates to improve functionality and add features.
