How to Record Your Eye Video

Follow these simple steps to capture a clean, analyzable slow‑motion eye video.

1. Camera Setup

Use your phone’s front facing camera on slow‑motion mode (atleast 120 FPS recommended).
Hold the phone vertically and keep it stable.
Make sure your head fills most of the frame, is centered, is straight-on to the camera, and is in focus.
Avoid strong reflections or backlighting.

Look straight ahead into the phone's camera (both of your eyes should be centered in their eye socket).
Keep your head still — only your eyes should move.
Record for at least 1-2 seconds while looking at the phone's camera before looking at the top bridge of your nose (directly between your eyes).
Continue to record for another 1-2 seconds while looking at the top bridge of your nose.
The goal is that there is 1-2 seconds before and after your actual eye movement to ensure that the phone is capturing in slow-motion (higher frame rate).

Edit and trim the video so it starts with your eyes looking straight at the camera and ends with your eyes looking cross-eyed at your nose.
Remove as much of the video as possible outside of the eye movement events.
Save the video (overwritten the old video).