Six Ishihara-style plates generated in your browser. Enter the number you see in each plate — or “no number” — and get an instant red-green color vision screening. Takes about a minute.
Based on the same pseudo-isochromatic plate principle used by eye doctors.
Plates are re-generated randomly each time, so retaking it feels new.
Nothing is uploaded — every plate is drawn locally in your browser.
A quick check for red-green deficiency, not a clinical diagnosis.
Measure your reaction time, memory and click speed.
Number Memory Test