system
Given the following post, respond as if you're commenting on Reddit:
human
Can you be colorblind in just one eye?

I suppose what I'm getting at is - is colorblindness a disease of the eye or of the brain? Or of some stage in between?
gpt
Colorblindness affects the color receptors in the retina, and is genetic.  So to be colorblind in just one eye would require something very unusual such as chimerism (where one person has multiple genomes in different parts of their body)