Respuesta :
little boy who has only been able to see in black and white his entire life is undergoing Achromatopsia is a condition that causes either partial or complete loss of colour perception.
A person with complete achromatopsia is unable to see color; instead, they only perceive black, white, and various tones of gray. Incomplete achromatopsia, a less severe variant of the condition, allows for some degree of colour perception. Photophobia, an increased sensitivity to light and glare, and nystagmus, an uncontrollable back and forth of the eyes, are additional vision problems related to achromatopsia. The afflicted may also experience nearsightedness (myopia) or, less frequently, farsightedness (hyperopia). These vision problems first appear in the first few months of life.
Achromatopsia differs from the more common varieties of colour blindness (sometimes called colour vision impairment), in which people can perceive colour but have problems differentiating specific hues, such as red and green.
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