examination of colour vision

Last reviewed 05/2023

Examination of colour vision may be of value in three main situations:

  • optic nerve disease
  • central scotoma
  • congenital colour blindness

Patients with optic nerve disorders may complain that colours look "washed our" (desaturated); in such cases the field of red colour vision should be examined.

Congenital colour blindness may be tested for using Ishihara cards.