ISSN: 1300-0365
Dil: Türkçe
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Lens Metabolizması Ve Katarakt Gelişim Mekanizmaları
Fatih KAREL*, Yusuf IŞIKÇELİK**, Tamer TAKMAZ** *Doç.Dr. Ankara Üniv. Tıp Fakültesi Göz Hast. ABD, **Dr. Ankara Üniv. Tıp Fakültesi Göz Hast. ABD, ANKARA
The lens is a transparent, avascular, biconvex structure held in position behind the pupil by zonular fibers. It is cabaple of chan-ging shape and one of the main refracting surfaces of the eye. The primary function of the lens is to focus light rays upon the retina. The lens metabolism is mainly anaerobic because it has no blood vessels and minimal oxygen is dissolved in surrounding structures. It is metabolically active and remains relatively dehydrated, has actively multiplying cells at the equator, synthesis lens proteins and membranes. Cataracts result from protein denaturation, increased molecular weight of proteins, water vesicles between lens fibers, inc-reasing proliferaton and migration of lens epithelium. In this article the lens metabolism and mechanisms of cataract formation is discussed.Keywords: Lens, Metabolism, CataractTurkiye Klinikleri J Ophthalmol 1997, 6:50-56
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