---
title: "OKN Viewer: Nystagmus — App Overview"
url: https://marlvel.ai/apps/com-ishida-isihda-nystagmustest
category: Medical
developer: ishida yuto
platforms: ios
rating: 3.7 (3 ratings)
pricing: paid
report_level: overview
generated: 2026-04-30
last_verified: "2026-04-30T10:53:55.981Z"
---

<!-- SECTION: Key Insight -->
> **Key Insight:** This app provides a specialized, configurable interface for inducing and recording optokinetic nystagmus for educational and clinical observation.

<!-- SECTION: Quick Facts -->
| Metric | Value |
|--------|-------|
| Category | Medical |
| Rating | 3.7 ★ (3) |
| Pricing | paid |
| Platforms | iOS |
| Latest Version (iOS) | 1.4 |
| Developer | ishida yuto |

<!-- SECTION: Summary -->
## What is OKN Viewer: Nystagmus?

OKN Viewer: Nystagmus is a medical-focused tool designed to induce and observe optokinetic nystagmus by displaying moving stripe patterns on a smartphone screen. The app allows users to record eye movements via the front-facing camera, serving as a practical resource for medical, rehabilitation, and educational observation.

<!-- SECTION: Key Features -->
## Key Features

- **Adjustable stripe width**: Users can intuitively modify the width of the moving stripes using a slider.
- **Adjustable moving speed**: The speed of the stripe movement can be customized from very slow to fast.
- **Customizable stripe color**: Users can select specific colors to improve visibility and enhance the visual effect.
- **Front camera recording**: The app enables users to record their eye movements while maintaining focus on the screen for later review.

<!-- SECTION: Target Audience -->
## Who is it for?

Medical professionals, rehabilitation specialists, and educators interested in observing and demonstrating optokinetic nystagmus.

<!-- SECTION: Links -->
## Links

- [App Store](https://apps.apple.com/us/app/okn-viewer-nystagmus/id6695726882?uo=2)
- [Full Intelligence Report](https://marlvel.ai/apps/com-ishida-isihda-nystagmustest)

---
*This is an overview report. Sentiment analysis, competitive landscape, and SWOT analysis are available in the [full intelligence report](https://marlvel.ai/apps/com-ishida-isihda-nystagmustest).*
*Generated by [Marlvel.ai](https://marlvel.ai) — Independent app intelligence.*