Which of the following pathological conditions is complete color blindness?

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Achromatopsia, also known as total color blindness, is a rare disorder in which a person cannot see any colors at all. Monochromatism is a type of color vision deficiency where a person can only see shades of one color, such as blue or yellow. Astigmatism is a refractive error that causes blurry vision at all distances, and retinitis refers to inflammation of the retina which can cause vision loss.

Which of the Following Pathological Conditions Is Complete Color Blindness