A cataract is a cloudy area on the lens of the eye. Since the lens needs to be clear to function well, this opacity causes visual disturbances and, left untreated, can eventually result in blindness.[1]
What are cataracts?
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•Last Updated: May 16, 2025
Cataracts are cloudy areas on the lens of the eye that lead to visual disturbances. If untreated, they can ultimately result in blindness.