This screening uses Ishihara-style plates: a number is hidden in a field of coloured dots. Plates test red-green, blue-yellow, and monochromacy (luminance only). This is not a medical diagnosis. See an optometrist for proper testing.
Screen readers: This test is visual. Each plate shows a number formed by coloured dots. We provide the correct answer after you submit so you can compare.
Plate 1 of 8
What number do you see?