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Lens fibers: elongated cells derived from the subcapsular epithelia near the equator of the lens

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CASE REPORTMATURE CATARACTCraeted by:Mega Heksana DeviI11106028Oponent:Dian. AGerryJuwita Kwan CMutia A.PSMF MATA RSUD DR. SOEDARSOFACULTY OF MEDICINEPONTIANAK20101Lembar PersetujuanTelah disetujui Presentasi Kasus dengan Judul:KATARAK MATURTelah disetujui,Pontianak, 29 April 2010KonsulenDisusun oleh :dr. Moh. Iqbal, Sp.M.M.kesMega Heksana DeviI111060282CHAPTER IINTRODUCTIONA cataract is a clouding of the eye's natural lens, which lies behind the iris and the pupil.The lens works much like a camera lens, focusing light onto the retina at the back of the eye. Thelens also adjusts the eye's focus, letting us see things clearly both up close and far away.(1)Aging is the most common cause of cataract (esp. persons over 65-70 years) but manyother factors can be involved, including trauma, toxins, systemic disease, and heredity. Agerelated cataract is a common cause of visual impairment. Cataract usually happens in both eyes,but traumatic cataract may happen in only one eye. Congenital cataract remains stationary. Whencataract have progressed enough to seriously impair patient's vision and affects patient's dailylife, it will be treated by day surgery operation.The lens is mostly made of water and protein. The protein is arranged in a precise waythat keeps the lens clear and lets light pass through it. But as we age, some of the protein mayclump together and start to cloud a small area of the lens. This is a cataract, and over ti

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