Achromatopsia - Achromatopsia, also known as rod monochromacy and total congenital color blindness. It is a medical syndrome that usually exhibits at least five related symptoms, such as color blindness, amblyopia, hemeralopia, nystagmus, and abnormal iris operation. The term originally referred to acquired diseases, such as disorders related to damage to the midbrain (mainly the midthalamus or cerebral cortex, especially the fourth visually related area, V4), but now it usually refers to autosomal recessive inherited congenital visual diseases, where patients cannot perceive color or achieve satisfactory vision under external sunlight.
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