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目的 探讨利用角膜地形图引导切口使白内障术前存在的角膜散光通过白内障手术达到矫正或改善以便获得较好的裸眼视力。方法 在角膜地形图陡峭轴做散光选择切口进行超声乳化白内障吸出注人器法人工晶体植入术。结果 917例(1226只眼)患者术后散光状况均较术前有明显改善。本组病例术前散光<1.50D者术后平均散光0.51±0.10D。术前1.75～2.75D经一对弧形角膜切口术后75％小于1.50D,平均0.85±0.52D。术前3.00～5.00D术后平均1.75±0.70D,而>5.25D散光者术后平均散光2.75±0.90D。结论 角膜地形图引导白内障手术能较好的矫正散光,获得满意的视力。有条件的单位值得推广。
Objective To explore the use of corneal topography to guide incision so that the preoperative cataract surgery corneal astigmatism through cataract surgery to achieve correction or improvement in order to obtain better visual acuity. Methods The astigmatism selective incision was made on the steep axis of corneal topography for phacoemulsification and intraocular lens implantation. Results The postoperative astigmatism of 917 patients (1226 eyes) was significantly improved compared with that before operation. The patients preoperative astigmatism <1.50D were astigmatism after 0.51 ± 0.10D. Preoperative 1.75 ~ 2.75D after a pair of curved corneal incision 75% less than 1.50D, an average of 0.85 ± 0.52D. Preoperative 3.00 ~ 5.00 D after surgery an average of 1.75 ± 0.70 D, and> 5.25 D astigmatism after the average astigmatism 2.75 ± 0.90 D. Conclusion Corneal topography to guide cataract surgery can better correct astigmatism, to obtain satisfactory vision. Conditional units worth promoting.