Müller-Jensen K, Barlinn B
Städtisches Klinikum, Augenklinik, Karlsruhe, Germany.
J Cataract Refract Surg. 1997 Apr;23(3):354-7. doi: 10.1016/s0886-3350(97)80179-4.
To assess long-term astigmatic changes after clear corneal cataract surgery.
Städtisches Klinikum, Augenklinik, Karlsruhe, Germany.
We evaluated the first 100 of 2,800 patients having cataract surgery with a superior or lateral corneal self-assessing incision and implantation of a 5.0 mm poly(methyl methacrylate) intraocular lens. Surgically induced astigmatism (IA) and absolute astigmatism (AA) were evaluated after 1 week and 1 and 2 years using keratometry and corneal topography. Statistical analysis was done using the Wilcoxon signed-rank test.
In eyes with a 12 o'clock incision (n = 50), the mean IA was 1.18 diopters (D) +/- 0.79 (SD) after 1 year and 1.53 +/- 0.95 D after 2 years. In eyes that had with-the-rule astigmatism preoperatively (n = 15), the mean AA was 0.62 +/- 0.57 D after 1 year and 0.93 +/- 0.56 after 2 years. In eyes with lateral incisions (n = 50), the mean IA was 0.96 +/- 0.74 after 1 year and 0.64 +/- 0.50 after 2 years. In eyes with against-the-rule astigmatism preoperatively (n = 15), the mean AA was 0.66 +/- 0.70 after 1 year and 0.52 +/- 0.65 after 2 years. The between-group difference in astigmatism after 2 years was statistically significant.
The 12 o'clock incision was associated with a statistically insignificant increase in AA 2 years postoperatively and the lateral incision, with a statistically significant decrease. We currently recommend routine use of clear corneal incisions in cataract surgery.
评估透明角膜白内障手术后的长期散光变化。
德国卡尔斯鲁厄市立医院眼科。
我们评估了2800例接受白内障手术患者中的前100例，这些患者采用上方或侧方角膜自我评估切口，并植入5.0毫米聚甲基丙烯酸甲酯人工晶状体。使用角膜曲率计和角膜地形图在术后1周、1年和2年评估手术诱导散光（IA）和绝对散光（AA）。采用Wilcoxon符号秩检验进行统计分析。
在采用12点切口的眼（n = 50）中，术后1年平均IA为1.18屈光度（D）±0.79（标准差），2年后为1.53±0.95 D。术前有顺规散光的眼（n = 15），术后1年平均AA为0.62±0.57 D，2年后为0.93±0.56。在采用侧方切口的眼（n = 50）中，术后1年平均IA为0.96±0.74，2年后为0.64±0.50。术前有逆规散光的眼（n =
