Mis on värvipimedus?
Värvipimedus tähendab võimetust tajuda värve samamoodi nagu enamik inimesi ja eristada teatud värve üksteisest. Värvipimedus on üsna levinud ja sel on mitu vormi. Tegemist on päriliku iseärasusega, mis kandub edasi ainult x-kromosoomiga ja esineb seega suurema tõenäosusega meestel (Euroopas lausa igal kaheteistkümnendal mehel). Inimeste värvitaju äärmuslikke erisusi kirjeldas esimesena 1794. aastal briti keemik ja füüsik John Dalton (1766–1844), kes käsitles levinuimat punase-rohelise värvipimedust ehk deuteranoopiat, mis oli ka temal endal.
What is colour blindness?
Colour blindness is the inability to perceive colours in the same way as most people and to distinguish certain colours from each other. Colour blindness is quite common and takes several forms. It is a hereditary trait that is passed on only through the x-chromosome and is therefore more likely to occur in men (as many as one in twelve men in Europe). The extreme differences in human colour perception were first described in 1794 by the British chemist and physicist John Dalton (1766-1844), who described the most common red-green colour blindness, or deuteranopia, which he himself had.