Stephen J. Schueler, M.D.

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Cataracts Overview

What are cataracts?
A person with cataracts has a cloudy spot that forms inside the lens of the eye. A cataract blocks light as it passes through the lens. This reduces the amount of light that reaches the retina, resulting in poor vision. Almost all people over 60 years old have cataracts. Risk factors for cataracts include smoking, diabetes, and previous eye injury.

What are the symptoms of cataracts?
The symptoms of cataracts occur slowly and without pain. Vision becomes gradually worse over many years, and bright light is necessary in order to see clearly.

How does the doctor treat cataracts?
Treatment of cataracts includes surgery to replace the cloudy lens with an artificial implant.

Continue to Cataracts Incidence

Last Updated: Dec 7, 2010 References
Authors: Stephen J. Schueler, MD; John H. Beckett, MD; D. Scott Gettings, MD
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PubMed Cataracts References
  1. Asbell PA, Dualan I, Mindel J, Brocks D, Ahmad M, Epstein S. Age-related cataract. Lancet. 2005 Feb 12-18;365(9459):599-609. [15708105]
  2. Kyselova Z, Stefek M, Bauer V. Pharmacological prevention of diabetic cataract. J Diabetes Complications. 2004 Mar-Apr;18(2):129-40. [15120709]
  3. Shichi H. Cataract formation and prevention. Expert Opin Investig Drugs. 2004 Jun;13(6):691-701. [15174955]
  4. Zetterstrom C, Lundvall A, Kugelberg M. Cataracts in children. J Cataract Refract Surg. 2005 Apr;31(4):824-40. [15899463]
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