What occurs when a cataract develops?

When a cataract develops, the lens of the eye becomes cloudy. This cloudiness occurs due to the accumulation of proteins in the lens that disrupt its clear structure, leading to a decrease in vision quality. Individuals with cataracts often experience blurred vision, difficulty seeing at night, and sensitivity to glare. The cloudiness can progress over time, resulting in further vision impairment if left untreated. This condition is part of the natural aging process and is not directly related to issues with the iris, retina, or eyelids, which explains why the other options do not accurately describe what occurs with cataract development.