The full upstream README, mirrored here for reference. Install config, tool schemas, adoption signals, and an original overview live on the Colorblind listing page.
opticquiz.com is a set of vision tests that run entirely on the device. No account, no upload, no image ever sent anywhere - the results exist in the tab and vanish with it.
Colour vision, D-15 arrangement, hue discrimination, anomaloscope-style matching, contrast sensitivity, acuity, astigmatism, Amsler grid, blind spot, vernier alignment, flicker fusion, saturation, dominance and reaction.
A test on a web page cannot be a diagnosis: an uncalibrated display, ambient light and viewing distance all move the result. Each test says so where it reports, and points at an eye examination rather than standing in for one.
Translations (de, es, fr, hi, it, pt, zh), a browser extension, a VS Code
extension, a Figma plugin, an embeddable widget, and the research notes behind
the plate colours under research/.
Part of F-Keys — independent hardware, software and internet products. See the working log and live status.