Color Vision Labs
Vision & Brain Tests
Choose a free self-check for your vision, reaction speed, or attention. Results are for self-assessment, not diagnosis.
Astigmatism Test
Spot the hallmark sign of astigmatism with the fan-chart self-check — one eye at a time.
Open the testReaction Time Test
Wait for green, then tap — measure your reaction speed in milliseconds over five rounds.
Open the testStroop Test
Name the ink color, not the word — see your Stroop interference effect in milliseconds.
Open the testEvery test here runs right in your browser, takes about a minute, needs no sign-up, and stores nothing. They're for screening and self-assessment — a fun, honest look at your own vision and attention, not a medical diagnosis.
Vision reference
Looking for color vision tests?
These are free screening and self-assessment tools, not medical diagnoses. Results depend on your screen and setup. For anything that matters, see an eye-care or healthcare professional.