Tag: Colour blindness

Colour blindness


Colour blindness


  • Colour blindness also known as daltonism

→ Colour blindness is tested by Ishihara chart

→ Trichromats – All 3 cone types +

→ Dichromats – 2 cone types +

→Red colour-blind – Red cones not present

→Green colour-blind – Green cones not present

→ Blue colour blind – Blue cones not present

→Monochromats – 1 type of cones present

→ Most common colour blindness – Red green colour blindness [90%]

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