A cataract is a clouding of the lens in the eye which leads to a decrease in vision.  Cataracts usually develop slowly and can affect one or both eyes.

Cataracts are usually due to aging but can also occur with trauma, be present at birth or occur as a result of eye surgery.  Cataracts can cause blurry vision over time as the lens in the eye becomes significantly cloudier.  The color of the lens can also change from a clear to a yellowish or brownish hue.  This change can result in a change in color perception.  Other symptoms can include glare, difficulty driving and seeing at night and blurred vision.

Cataracts can be detected during a routine compressive eye examination.


Surgical removal of cataracts is performed routinely under local anesthesia.  The natural lens of the eye is removed and an artificial lens is implanted.  This generally helps improve the vision.  Prognosis is generally good if there are no postoperateive complications.

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