In colour blindness red , green and other colour appear

Colour blindness is

Red-green colour blindness in man is.

Colour blindness in which all colours appear grey is

Colour blindness in which all colours appear grey is

Colour blindness in which all colours appear grey is

A man is suffering from colour blindness for green colour. To remove this defect, he should use goggles of

A woman with no history of colour blindness marries a colour blind man.What are the risks for this couple of having a son or daughter who is colour blind ?

Red green colour blindness appears due to