A cataract is the clouding of the lens of the eyes. Contrary to popular belief, a cataract does not form at the outside layer of the eyes, it instead forms inside the eyes — on the intraocular lens.
A cataract prevents light from passing through the lens correctly, causing blurry vision and glaring at night. Modern technology allows optometrists to track the progression of your cataract and advise you when the time is right to surgically remove it. Cataract surgery involves the replacement of the affected lens with an intraocular lens. This surgery is simple and relatively cheap.