A simple tool designed for eye care providers to quickly screen for color vision deficiency based on Dr Shinobu Ishihara's Color Test.

Image credits: Eight Ishihara charts for testing colour blindness, Europe, 1917-1959. Credit: Science Museum, London. CC BY https://wellcomecollection.org/

Swipe left and right to change plate, or select directly from tool below. The first plate is the control plate that all individuals should be able to distinguish.

Keep in mind that specific device, screen protector, display brightness, and ambient lighting can all affect the reliability and reproducibility of mobile screening. The gold standard should always be a hard copy of the Ishihara plates!!

Enjoy!