A cataract is an opacity, or clouding, of the lens of the eye.
The prevalence of cataracts increases dramatically with age. It typically occurs in the following way:
Cataracts can form in any of three parts of the lens and are named by their location.
Allen D. Cataract. BMJ Clinical Evidence. Web publication date: 01 April 2007 (based on October 2006 search). Accessed July 1, 2008.
American Academy of Ophthalmology. Cataract in the Adult Eye, Preferred Practice Pattern. San Francisco: American Academy of Ophthalmology, 2006. Accessed July 1, 2008.
Awasthi N, Guo S, Wagner BJ. Posterior capsular opacification: a problem reduced but not yet eradicated. Arch Ophthalmol. 2009 Apr;127(4):555-62.
Bell CM, Hatch WV, Fischer HD, Cernat G, Paterson JM, Gruneir A, et al. Association between tamsulosin and serious ophthalmic adverse events in older men following cataract surgery. JAMA. 2009 May 20;301(19):1991-6
Clinical Trial of Nutritional Supplements and Age-Related Cataract Study Group, Maraini G, Sperduto RD, Ferris F, Clemons TE, Rosmini F, et al. A randomized, double-masked, placebo-controlled clinical trial of multivitamin supplementation for age-related lens opacities. Clinical trial of nutritional supplements and age-related cataract report no. 3. Ophthalmology. 2008 Apr;115(4):599-607.e1.
Fernandez MM, Afshari NA. Nutrition and the prevention of cataracts. Curr Opin Ophthalmol. 2008 Jan;19(1):66-70.
Friedman AH. Tamsulosin and the intraoperative floppy iris syndrome. JAMA. 2009 May 20;301(19):2044-5.
Guercio JR, Martyn LJ. Congenital malformations of the eye and orbit. Otolaryngol Clin North Am. 2007 Feb;40(1):113-40, vii.
Long V, Chen S, Hatt S. Surgical interventions for bilateral congenital cataract. Cochrane Database Syst Rev. 2006 Jul 19;3:CD003171.
Moeller SM, Voland R, Tinker L, Blodi BA, Klein ML, Gehrs KM, et al. Associations between age-related nuclear cataract and lutein and zeaxanthin inthe diet and serum in the Carotenoids in the Age-Related Eye Disease Study, an Ancillary Study of the Women's Health Initiative. Arch Ophthalmol. 2008 Mar;126(3):354-64.
Olitsky SE, Hug D, and Smith LP. Abnormalities of the lens. In: Kliegman RM, Behrman RE, Jenson HB, Stanton BF, eds. Nelson Textbook of Pediatrics. 18th ed. St. Louis, MO: WB Saunders; 2007; chap 627.
Wishart MS, Dagres E. Seven-year follow-up of combined cataract extraction and viscocanalostomy. J Cataract Refract Surg. 2006 Dec;32(12):2043-9.
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