Overview
- Dean Jackson, known as @beatonthebeeb, posted a short looping clip that instructs viewers to stare at the horse’s eye as a monochrome scene appears to bloom into colour.
- The demonstration overlays deliberately mismatched, psychedelic colours to induce retinal adaptation before removing them on a countdown.
- Viewers describe vivid colours that disappear when they blink or look away and reappear when they refocus on the eye.
- Coverage frames the effect as consistent with afterimage phenomena and references explanatory resources and classic vision research by Hubel and Wiesel.
- Reports rely on anecdotal reactions rather than controlled testing, so individual results and viewing conditions influence what people see.