AbstractA study of colour blindness and its correlation with different blood groups was undertaken in 384 medical students (219 males and 165 females). Colour blindness was studied by using Ishihara\'s chart. In blood group AB, in males, and group B in females, the incidence of colour blindness was significantly higher. We also observed a slightly higher incidence of colour blindness in females.
Key Words: Colour Blindness, Blood Group.