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作者对１１１８眼囊外白内障摘除并后房人工晶体植入后视力低于０．５的患眼分两组进行随访。甲组为出院时小孔片视力低于０．５的１０１眼（１０１／１１１８，９．０３％）。乙组为随机选择术后不同时期的１５０只眼。分析两组中视力低下的原因。甲组随访得５３眼（随访率５２．４７％）。其中１２眼随访时视力已≥０．５。而视力仍在０．５以下的４１眼中，３９眼是由原有眼病所致，以眼底病为主；仅２眼与手术并发症有关。乙组随访表明视力低于０．５者共１５限（１５／１５０，１０％），其中１２眼为原有眼病所致，仅３眼与手术有关。两组中导致视力低下的术并发症为虹膜睫状体炎（３眼）及继发性青光眼（２眼）。
The author of 1118 cases of extracapsular cataract extraction and posterior chamber intraocular lens implantation less than 0.5 eyesight were divided into two groups were followed up. Group A was 101 eyes (101 / 1118,9.03%) with visual acuity of less than 0.5 when discharged from the orifice. Group B was randomly selected 150 eyes at different stages after surgery. Analysis of the reasons for poor vision in both groups. Group A follow-up was 53 eyes (follow-up rate was 52.47%). Visual acuity was ≥0.5 at 12 eyes. The visual acuity still below 0.5 in 41 eyes, 39 eyes caused by the original eye disease, mainly fundus disease; only 2 eyes and surgical complications. Group B follow-up showed that the visual acuity of less than 0.5 were 15 limits (15 / 150,10%), of which 12 eyes caused by the original eye, only 3 eyes and surgery. Complications resulting in low vision in both groups were iridocyclitis (3 eyes) and secondary glaucoma (2 eyes).