目的　探讨表面麻醉在巩膜隧道切口超声乳化术中的应用效果。方法　对 2 95例 (30 1只眼 )白内障患者行表麻下巩膜隧道切口的超声乳化术。结果　随访 3～ 6个月 ,裸眼视力≥ 0 .5者 2 86只眼 (95 .0 2 % ) ,≥ 1.0者2 4 4只眼 (81.0 6 % )。 132例 (44 .75 % )患者仅在电凝止血时有轻微痛感 ,3例 (1.0 2 % )手术全过程有痛感 ;发生后囊膜破裂 2只眼 ,术后角膜内皮细胞轻度水肿 2只眼 ,切口处形成滤泡 1只眼。结论　表面麻醉下经巩膜隧道切口的超声乳化术具有安全、有效、快速等优点 ,是白内障手术的又一改进 Objective To investigate the application of surface anesthesia in scleral tunnel incision phacoemulsification. Methods A total of 2 95 cases (30 eyes) of cataract patients underwent scleral tunnel incision phacoemulsification. Results The follow-up ranged from 3 to 6 months. There were 2 86 eyes (95.0%) with uncorrected visual acuity ≥ 0.5, and 240 eyes (81.0 6%) ≥ 1.0. In 132 patients (44.75%), there was mild pain only in the electrocoagulation and hemostasis. Three patients (1.02%) had pain during the whole operation. Two patients had posterior capsular rupture and the corneal endothelial cells had mild edema. Only eyes, cut the formation of follicular 1 eye. Conclusion The phacoemulsification of trans-scleral tunnel incision under surface anesthesia is safe, effective and rapid, which is another improvement of cataract surgery