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A cataract is a clouding of the lens in your eye. It affects your vision. Cataracts are very common in older people. By age 80, more than half of all people in the United States either have a cataract or have had cataract surgery.
Common symptoms are
Cataracts usually develop slowly. New glasses, brighter lighting, anti-glare sunglasses or magnifying lenses can help at first. Surgery is also an option. It involves removing the cloudy lens and replacing it with an artificial lens. Wearing sunglasses and a hat with a brim to block ultraviolet sunlight may help to delay cataracts.
National Eye Institute
---- '''Cataract''' is also used to mean a waterfall or where the flow of a river changes dramatically. It comes from the Greek language word meaning "downrush" or "to dash down" or the Latin "cataract" meaning a waterfall, a floodgate or a National Eye Institute A '''cataract''' is any opacity which develops in the lens (vision) of the eye or in its envelope. Cataracts form for a variety of reasons, including infrared and microwave exposure, secondary effects of diseases such as diabetes, or simply due to advanced age; they are usually a result of denaturation of lens proteins. Genetic factors are often a cause of congenital cataracts and may also play a role in predisposing someone to cataracts. Some cataract formation is to be expected in any person over the age of 70. Fully half of all people between the ages of 65 and 74 and about 70% of those over 75 have some cataract formation. Cataracts may also be produced by eye injury or physical trauma. Cataracts may be partial or complete, stationary or progressive, hard or soft. An early technique to remove cataracts was couching, which involved using a thin needle or stick to remove the clouding. This technique is known to have existed in Roman times and continued to be used throughout the Middle Ages and continues to be used in underprivilleged "Third world" countries today. The most effective and common treatment is cataract surgery to remove the cloudy lens. There are two types of surgery that can be used to remove cataracts, extra-capsular and intra-capsular surgery. Extra-capsular surgery consists of removing the lens but leaving the majority of the lens ... [ Read More ]
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Ophtec BV - Privately held medical device manufacturing company founded in 1983. Offers ophthalmic implants and related surgical products for cataract, refractive and eye trauma surgery, includes contact information.
Cataract Savings & Credit Union Ltd - Financial co-operative with head office in Niagara Falls, Ontario, serving the financial needs of local members since 1949.
Medisoft Ltd - Provides ophthalmology electronic patient record software with cataract audit, IOL power calculations and automatic generation of correspondence.
DGH Technology, Inc. - Ultrasonic equipment for cataract and refractive eye surgeons.