白内障超声乳化手术切口的长度和宽度对术后角膜水肿的影响

Effect of the length and width of tunnel incision of cataract phacoemulsification on corneal edema after operation

目的探讨隧道切口的长度和宽度对白内障超声乳化术后角膜水肿的影响。方法抽取2006年1月至2008年2月3年内,由同一人完成的单纯性白内障行超声乳化手术病例共486例,按隧道切口的长度和宽度不同分为3组。第1组:切口宽3.2mm,隧道长2.75～3mm,共132例;第2组:切口宽3.2mm,隧道长1.75～2mm,共158例;第3组:切口宽2.75mm,隧道长1.75～2mm,共196例。分别统计3组病例术后角膜水肿发生情况。并排除了其它种种影响角膜水肿的原因。结果第1组角膜水肿的发生率明显高于第2组,而第2组又高于第3组,说明角膜缘隧道切口的长度和宽度明显影响着白内障超声乳化术后角膜水肿的发生。结论长为1.75～2.0mm、宽为2.75mm的隧道切口,能降低白内障超声乳化术后角膜水肿的发生率,且此手术切口同样安全可靠。

Objective To investigate the effect of the length and width of tunnel incision of cataract phacocmulsification on corneal edema after operation. Methods A total of 486 patients who were carried out single cataract phacoemulsifieation from 2006to 2008 were collected, which were classified into 3 groups by the length and width of tunnel incision. Group 1 ： the length and width were 3.2 mm and 2.75 -3 mm respectively, and the number of cases was 132. Group 2： the length and width were 3.2 mm and 1.75 - 2 mm respectively, and the number of cases was 158. Group 3 ： the length was 2.75 mm and width was 1.75 - 2 mm, and the number of cases was 196. Then the occurrences of corneal edema after operation for the three groups were recorded respectively, and the other possibilities which could lead to corneal edema were excluded. Results The incidence rate of corneal edema of Group 1 was higher than that of Group 2, obviously. Further- more, Group 3 was lower than Group 2, obviously. These illustrated that the length and width of tunnel incision could affect corneal edema after cataract phacoemulsification operation obviously. Conclusion The tunnel incision of which the length and width are 2.75 mm and 1.75 - 2 mm respectively could decrease the incidence rate of corneal edema after cataract phacocmulsification operation, and the operation incision is reliable.