Anatom3DColour blindness
Dyschromatopsia (daltonismus) · Barvoslepost
What it is
Inherited faulty cone pigments, usually red–green, in 1 man in 12 and 1 woman in 200; blue–yellow and total colour blindness are rare.
Symptoms & signs
- Confusing reds and greens
- trouble with traffic lights, maps or cooked meat
- dull-looking colours
- rarely light sensitivity and poor vision (achromatopsia)
🚩 Get help if…
- call 112 / 911 now Sudden loss of colour vision in one eye with pain on moving it
- see a doctor soon Colours fading in one eye only
- see a doctor soon Colour vision getting worse over time
- see a doctor soon Colour change after starting a new medicine
Where it strikes
Medical treatment
- Ishihara plates and colour tests
- advice on careers and driving
- colour-filtering glasses for some tasks
- apps that name colours
Natural & lifestyle
- Label clothes and objects
- high-contrast settings
Emerging & experimental
- Gene therapy (proved in monkeys; trials for achromatopsia)
Alternative, off-label & anecdotal
Approaches used outside the guidelines, with what their supporters report and what testing has found so far.
- Colour-enhancing glasses (EnChroma) — boost contrast; tests show no restored colour vision mixed evidence
- Diets and supplements — cannot change cone pigments anecdotal / traditional
- Colour-naming apps and filters — practical help early / small studies
ICD codes
- ICD-10 H53.5
- ICD-11 9D44 Impairment of colour vision