A moment for your vision
Visual field test
Keep looking at the center and respond when you notice a flash.
- Allow several minutes
- No sign-up
For screening only. This does not replace a professional eye exam.
Settle your screen
Use a stable, larger screen.
Practice first
Try three flashes to learn the controls.
Watch the center
Press Space or tap when a flash appears.
A simple guide
How it works
Keep looking at the center and respond when you notice a flash.
Settle your screen
Use a stable, larger screen.
Practice first
Try three flashes to learn the controls.
Watch the center
Press Space or tap when a flash appears.
A quiet setting, stable distance and enough screen space.
Understanding your results
Review responses to flashes at sampled screen locations.
Each screen location is shown several times at different brightness levels. The record describes your responses, not the extent of your full visual field. More responses do not mean healthier eyes.
Scope and limitations
For screening only. This does not replace a professional eye exam.
Screen size, brightness, viewing distance, attention, and response timing all affect this demonstration. It is not a calibrated clinical test, does not track your gaze, and cannot diagnose or rule out glaucoma or other eye conditions.
Frequently asked questions
What to have ready
A quiet setting, stable distance and enough screen space.
What you’ll learn
Review responses to flashes at sampled screen locations. For screening only. This does not replace a professional eye exam.