What condition occurs as a result of a progressive thickening of the lens, causing vision to become cloudy, opaque and distorted?

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A cataract occurs as a result of a progressive thickening of the lens, causing vision to become cloudy, opaque and distorted. Macular degeneration is a condition where the macula, a part of the retina, deteriorates and central vision is lost. Glaucoma is a progressive optic nerve disease which leads to irreversible blindness if left untreated. Tinnitus is a condition where a person hears a ringing or buzzing sound in their ear, which is not caused by any external stimulus.

What Condition Occurs as a Result of a Progressive Thickening