OKN Viewer: Nystagmus
Record & Observe Eye Movements
$1.99 · Designed for iPad. Not verified for macOS.
Observe and record optokinetic nystagmus (OKN) on your iPhone or iPad.
OKN Viewer is a simple educational app for displaying moving stripe stimuli and observing optokinetic nystagmus (OKN) and eye movements.
Choose from four stimulus directions — up, down, left, and right. Adjust the speed, stripe width, and colors to suit your needs, and use the front-facing camera to record eye movements while viewing the OKN stimulus.
Your latest recording can be reviewed immediately, while previous recordings remain available in the video library.
KEY FEATURES
■ FOUR-DIRECTION OKN STIMULATION
Choose from up, down, left, and right stimulus directions.
■ ADJUSTABLE STIMULUS SETTINGS
Customize the stimulus to suit your needs:
- Speed: Slow / Normal / Fast
- Stripe width: Thin / Normal / Thick
- Customizable stripe colors
■ RECORD EYE MOVEMENTS
Use the front-facing camera to record eye movements while viewing the OKN stimulus.
■ QUICKLY REVIEW YOUR LATEST RECORDING
After recording, you can immediately open and review your latest video.
■ RECORDING LIBRARY
View and play your previous recordings in one place.
■ SAVE VIDEOS TO PHOTOS
Select recordings and save them to your Photos library when needed.
SIMPLE AND READY TO USE
No complicated setup is required.
Open OKN Viewer and start displaying an OKN stimulus immediately.
Adjust the direction, speed, stripe width, and colors as needed, then observe or record eye movements.
Your stimulus settings are saved and remain available the next time you open the app.
WHO IT'S FOR
OKN Viewer may be useful for:
- Learning about optokinetic nystagmus (OKN)
- Observing eye movements
- Ophthalmology and neuro-ophthalmology education
- Learning about nystagmus and balance-related eye movements
- Medical students and healthcare professionals
- Orthoptists and orthoptic students
- Educational demonstrations and training involving eye movements
PRIVACY FOCUSED
- No advertisements
- No behavioral analytics
- Recorded videos are not automatically uploaded or transmitted
OKN Viewer does not use behavioral analytics to track how you use the app.
Recordings are stored within the app. They are not automatically sent to an external server. You can choose to save selected recordings to your Photos library.
IMPORTANT NOTICE
OKN Viewer is intended for educational, learning, and observational purposes.
It is not intended to diagnose, treat, prevent, or make clinical decisions regarding any disease or medical condition.
Do not use the app or its recordings as the sole basis for medical diagnosis or treatment decisions.
Moving visual patterns may cause dizziness, nausea, visual discomfort, or other unpleasant symptoms in some users.
Stop using the app immediately if you experience discomfort.
If you are concerned about any medical symptoms, please consult an appropriate healthcare professional.
FEEDBACK AND BUG REPORTS
You can send feedback, feature requests, and bug reports from within the app.
Your feedback helps us continue improving OKN Viewer.
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.
The developer, ishida yuto, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- ishida yuto
- Size
- 670.7 KB
- Category
- Medical
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later. - iPad
Requires iPadOS 16.0 or later. - Mac
Requires macOS 13.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English and Japanese
- Age Rating
4+
- 4+
- Copyright
- © 2024 Yuto Ishida
