10/10/2025
What is Color Blindness?
Color blindness is a visual condition in which a person cannot differentiate between certain colors. It occurs when color-sensitive cells (cones) in the retina are defective or missing. The condition is typically inherited and is a sex-linked trait, meaning it appears more frequently in men than in women because the genes responsible for color vision are located on the X chromosome.
Prevalence of Color Blindness
Protan defects: About 1% of men
Deutan defects: About 5% of men
Tritan defects: Around 0.01% of the population
Overall, approximately 8% of men and 0.5% of women have some form of color vision deficiency.