värinäköhäiriö
Värinäköhäiriö, commonly known as color blindness, is a condition that affects a person's ability to distinguish certain colors. It is usually inherited and affects more men than women. The most common type is red-green color blindness, where individuals have difficulty distinguishing between red and green shades. Less common forms include blue-yellow color blindness and the rare total color blindness, or achromatopsia, where a person sees the world in shades of gray.
The cause of color blindness lies in the photoreceptor cells in the retina, specifically the cone cells.
Diagnosis typically involves simple vision tests using colored charts, such as the Ishihara plates. These tests