Health Dictionary
Reliable, easy-to-read patient information on common medical conditions — written in plain language, free of jargon, and grounded in current evidence. Browse the most frequent diagnoses, understand what they mean for everyday life, and learn which steps and questions help you have a focused conversation with your doctor.
Color agnosia
Introduction
Color agnosia (“agnosia” is Greek for non-knowledge), also known as “cerebral achromatopsia“, is a medical or psychological condition that prevents a person from recognizing colors even though the eyes are capable of distinguishing them. It is a specific form of agnosia and generally results from damage to the visual cortex, often in V4 (as opposed to most other kinds of color blindness, which stem from problems with the photoreceptors).
Notes
Notes
Color agnosia is different than color anomia, a condition in which a person can distinguish between colors but cannot connect those colors to their names.