This site is intended for healthcare professionals

Go to /sign-in page

You can view 5 more pages before signing in


Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

In monochromatism there is an absence of colour vision.

Possible causes:

  • may be the result of being born without cones (this causes low visual acuity, photophobia, nystagmus and an absence of colour vision), or,
  • when all cones contain the same visual pigment and there is therefore a failure to distinguish colour

Related pages

Create an account to add page annotations

Add information to this page that would be handy to have on hand during a consultation, such as a web address or phone number. This information will always be displayed when you visit this page