HOW TO USE (FAST)

1) Pick a test on PAGE 1

2) Press START for fullscreen lab mode

3) Exit: ESC or tap/click anywhere

4) For peripheral test: press SPACE (or tap) when you see a flash

SETUP (BETTER RESULTS)

Distance: arm’s length (monitor), 30–40cm (phone)

Lighting: avoid glare; use neutral ambient light

Brightness: comfortable, not max

Breaks: stop if you feel strain or headache

NOT MEDICAL ADVICE

These are visual patterns for testing and training focus.

If you have persistent double vision, pain, or sudden changes, see a professional.

FAQ

Why “lab”? time-based motion, stable geometry, readable HUD.

Does refresh rate matter? yes — higher refresh looks smoother.

Why no UI in fullscreen? cleaner stimulus, less distraction.

How do I exit? ESC or tap/click anywhere.

MINI BLOG (SHORT)

Fixation + pursuit + saccades are core eye-movement behaviours.

This page keeps them simple and consistent so you can feel changes over time.

Peripheral reaction mode adds timing so you can compare sessions.

KEYWORDS (NATURAL)

eye focus pattern • fixation stability test

smooth pursuit tracking • saccade jump test

peripheral reaction time • vision focus tool