方法：连续收集2006-09/2012-03慢性泪囊炎合并高血压、糖尿病、凝血功能低下等慢性疾病患者92例92眼，男36例，女56例，年龄71～90(平均77.20±11.08)岁。随机分为两组：对照组(传统泪囊摘除术组)46例和试验组(改良泪囊摘除术)46例。观察两组手术的有效性及安全性。

结果：经对比研究，改良泪囊摘除术组手术时间较短，传统泪囊摘除术约20min，而改良组仅需5min左右。改良泪囊摘除术未见明显严重并发症发生。

结论：改良泪囊摘除术，创伤轻、出血少、时间短，并发症少，尤其适用于年龄较大、身体状况较差、不能耐受较长手术时间和较大创伤的慢性泪囊炎患者。

METHODS:A retrospective study of 92 chronic dacryocystitis patients(92 eyes)undergoing common lacrimal excision surgery and improved lacrimal excision surgery from September 2006 to March 2012 was carried out. The patients(36 males, 56 females)with the age of 71-90 years(average 77.20±11.08)were randomly divided into control group(46 eyes)and experimental group(46 eyes). The patients in control group performed common lacrimal excision surgery and those in experimental group received improved lacrimal excision surgery. The efficacy and safety of two groups were analyzed.

RESULTS: The duration of improved lacrimal excision surgery(5min)was shorter than that of common lacrimal excision surgery(20min). No serious complications were presented in experimental group.

CONCLUSION:With the advantages of lighter trauma, less bleeding, shorter duration and fewer complications, the improved lacrimal excision surgery is effective and safe, especially suitable for the elderly with chronic dacryocystitis, who's at poor body condition, cannot tolerate longer operative time and has larger trauma.