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目的 :比较与评价不同方向透明角膜小切口超声乳化白内障吸除联合折叠人工晶状体植入术后角膜散光的变化。方法 :将 6 8例 (72只眼 )白内障患者 ,按切口方向位于角膜曲率最大子午线方向或位于颞上方及鼻上方分为A、B两组 ,行透明角膜切口超声乳化白内障吸除联合折叠人工晶状体植入术 ,比较术后角膜散光的变化情况。结果 :A、B两组术后 3个月平均手术性角膜散光度分别为 (0 92± 0 38)D和 (1 2 6± 1 0 8)D ,差异无显著性 (P >0 0 5 ) ;A组平均角膜散光度较术前减少0 14D ,B组增加 0 4 8D ,两组差异有显著性 (P <0 0 5 )。结论 :根据术前散光轴位选择切口方向 ,行透明角膜切口超声乳化白内障吸除联合折叠人工晶状体植入术 ,术后可减少角膜散光度。
OBJECTIVE: To compare and evaluate the changes of corneal astigmatism after phacoemulsification and foldable intraocular lens implantation in different directions. Methods: Sixty-eight cases (72 eyes) of cataract patients were divided into A and B groups according to the incision direction in the direction of the maximal corneal curvature or in the superior temporal and superior nasal passages. Phacoemulsification combined with manual folding and phacoemulsification Lens implantation, changes in postoperative corneal astigmatism. Results: The mean corneal astigmatism at 3 months after operation in group A and B was (0 92 ± 0 38) D and (120 6 ± 1 0 8) D, respectively, with no significant difference (P> 0.05) ). The average corneal astigmatism in group A decreased by 0 14D compared with that before operation, and increased by 0 48D in group B. The difference between the two groups was significant (P <0.05). Conclusion: According to the direction of preoperative astigmatism, the corneal astigmatism can be reduced by phacoemulsification with cataract extraction and foldable intraocular lens implantation.