Question

Defect of colour blindness can be remedied by the use of

A. Concave lens

B. Convex lens

C. Cylindrical lens

D. None of the above

Answer 1

Colour blindness can't be removed by use of any lense so, correct option is option D. None of the above.

Answer 2

Color blindness is a disease which is not related to blindness. It is basically a deficiency due to vitamin deficiency.

In this disease the person is unable to see the colors or we can say that the person is unable to distinguish the colors of different objects.

Since it is not a defect from internal part of the eye, therefore it cannot be cure with the help of any type of lens such as concave, convex or cylindrical. Hence here the option D is correct.