A cataract is a clouding of the eye’s natural lens, which can lead to blurry vision and, if left untreated, can cause blindness. The lens is located behind the iris and the pupil and helps focus light onto the retina. Cataracts typically develop gradually and are often associated with aging, but they can also be caused by other factors such as injury, medication, or certain medical conditions like diabetes. The most common symptoms include cloudy or blurry vision, difficulty seeing at night, and seeing halos around lights. Cataracts are treatable with surgery, where the cloudy lens is removed and replaced with an artificial one.
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