晶状体病

晶状体病

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Unformatted text preview: 晶晶晶晶 DISORDERS OF LENS • 晶晶晶晶 lens) 晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶 晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶 The lens is a kind of avascular transparent tissue with complex metabolic process. Its nourishment mainly comes from aquous humour. The disorder of the lens is commonly loss of its transparency and abnormality of its position; both can induce severe visual disturbance. 晶晶晶 CATARACT • 晶晶 (Introduction) • 晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶 cataract) 晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶 晶晶晶晶 • The opacity of lens is generally called cataract. But mild opacity of the lens has no affection to vision without any clinical significance. • 晶晶晶 Etiology) 晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶 晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶 晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶 晶晶晶晶晶晶 CLASSIFICATION OF CATARACT • 1. 晶晶晶 (according to etiology) 晶晶晶晶晶 (injuried) 晶晶晶晶 (complicated) 晶晶晶晶 (metabolic) 晶晶晶晶 (toxic) 晶晶晶晶 (radiating) 晶晶晶晶 (develoing) 晶晶晶晶 (after- cataract) 晶晶晶晶 • 2. 晶晶晶晶晶晶 according to age of occurring): 晶晶晶晶 congenital 晶晶晶晶晶晶 infantile 晶晶 晶晶晶晶 晶 juvenile 晶晶晶晶晶晶 adult 晶晶晶晶晶晶 senile 晶晶 • 3. 晶晶晶晶晶晶 according to the site of opacity): 晶晶晶晶 cortical 晶晶晶晶晶 nuclear 晶晶晶晶晶 晶 subcapsular 晶晶晶晶晶晶 capsular 晶晶 • 4. 晶晶晶晶晶晶 (according to the degree of opacity) 晶晶晶晶 incipient) 晶晶晶晶 (immature) 晶 晶晶晶 (mature) 晶晶晶晶 (hypermature) 晶 • 5. 晶晶晶晶晶 (according to the shape of opacity) 晶晶晶 (punctate) 晶晶晶 (coronary) 晶晶晶 晶晶晶 (lamellar) 晶 晶晶晶晶晶晶晶晶 晶 age-related cataract) • 晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶 晶晶晶晶晶晶晶晶晶晶晶晶 • is the most common one, often seen in the elder more than 50 years old. With aging its morbidity rate goes higher. It is gradually appeared degenerative change in the course of lens aging. Its pathologic mechanism isn’t understood completely yet, related with ultraviolet ray, with systemic disease such as diabetes, hypertension, arteriosclerosis, genetic factor as well as lens nourishment and metabolic condition and so on. 晶晶晶晶晶 clinical findings) • 晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶晶...
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晶状体病

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