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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.

The interactive tools run in your browser without an account. They explore vision, reaction speed, or attention; the contrast activity is an uncalibrated demonstration. They do not diagnose a condition. The guides below explain examinations that need professional methods and equipment.

Vision reference & exam guides

Vision standards

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.