患者,女,64岁,因左眼渐进性视力下降1年于2002年4月23日以左眼老年性白内障收入院。既往无青光眼病史。全身检查未见异常。右眼视力1.0,眼前节及眼底均无异常;左眼视力光感,光定位及辨色力正常,晶状体为皮质性混浊,呈瓷白色。术前测双眼眼压均为20.55m m H g(1m m H g=0.133K p Patient, female, 64 years old, due to left eye progressive vision loss 1 year on April 23, 2002 with left eye age-related cataract. No history of glaucoma. No abnormalities in the whole body examination. Right eye vision 1.0, anterior segment and fundus were normal; left eye vision light perception, light positioning and normal color discrimination, the lens is cortical opacity, was porcelain white. Preoperative measured intraocular pressure were 20.55m Hg (1m Hg = 0.133K p