Sunday, February 24, 2008
Clinical traumatic cataract performance
The mechanical eye injury (contusion, penetrating injury), Chemical burn, electrical injury and radiation can cause Crystal turbidity, collectively traumatic cataract. 1. Contusion cataract contusion, the pupil margin of iris pigment printed on crystal surface, the corresponding site under the lens capsule Ring turbidity, before injury time capsule of lens epithelial limitations kind can cause turbidity, can no longer develop or static-depth development . Crystal may be associated with subluxation or dislocation. 2. Perforation of the eyeball piercing traumatic cataract lens capsule rupture with at the same time, the water entered the capsule, crystal fiber swelling, degeneration, resulting turbidity. Tiny capsule rupture to be closed, stuffy confined to Break Department. But most of those crystal fiber rupture excessive swelling, and the cortex into the anterior chamber angle, caused secondary glaucoma, the need for timely surgery. 3. Radiation cataract of the infra-red, X-ray, gamma ray, neutron radiation caused. Mainly in the cortex posterior capsular opacity discoid and wedge-shaped, clear boundaries, gradually developed to the full cortex. Under the former capsule point vacuoles or turbidity. If so epithelial cell proliferation can form dense membrane. 4. Electric shocks cataract occurred in lightning, electrocution, the voltage induced cataract mostly 500-3000 volts. Lightning more bilateral cataract, cataract mostly unilateral electrocution, electric shock and ipsilateral site. Under the capsular opacity in the cortex, gradually developed into full opacity. Accompanied arc-related macular burns, poor eyesight Center.
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