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目的 :研究透明角膜切口位置对白内障超声乳化摘除联合折叠式人工晶体植入术前后散光变化的影响。方法 :对老年性白内障 6 8例、80眼进行透明角膜切口白内障超声乳化摘除联合折叠式人工晶体植入术。根据切口位置分为 1组 :上方切口 4 3眼 ,2组 :颞侧切口 37眼。分别于术前、术后 1d、1周、1、3月通过Topcon验光仪、Marco角膜曲率计检测角膜散光度及轴向。结果 :术后 1天、1周、1月 1组散光均大于 2组 ,以术前逆规性散光最甚 ,差异有显著性 (P <0 0 5) ,术后 3月两组差异无显著性。 (P >0 0 5)。根据Gravy向量法分析 ,1组术后 38例逆规性散光 ,2组术后 36例循规性散光。结论 :颞侧透明角膜切口白内障超声乳化摘除联合折叠式人工晶体植入术后短期形成的散光较小 ,且以循规性散光为主 ,为正常人所能接受 ,对术前具有逆规性散光的患者此为最佳手术方式。
Objective: To study the effect of clear corneal incision on the changes of astigmatism before and after phacoemulsification and foldable intraocular lens implantation. Methods: A total of 80 cases of senile cataract were treated with corneal incision phacoemulsification and foldable intraocular lens implantation. According to the incision position is divided into 1 group: upper incision 43 eyes, 2 groups: 37 temporal incision. Corneal astigmatism and axial were measured by Topcon refractometer and Marco keratometer respectively before operation, 1 day, 1 week, 1, 3 months after operation. Results: 1 day after surgery, 1 week, 1 month group 1 were more than two groups of astigmatism, the most preoperative rude astigmatism, the difference was significant (P <0 05), the difference between the two groups after 3 months Significance. (P> 0 0 5). According to the Gravy vector analysis, 38 patients were retrospectively astigmatism in the first group and 36 patients were followed up astigmatism in both groups. Conclusion: The temporal astigmatism corneal incision phacoemulsification combined with foldable intraocular lens implantation short time astigmatism formed less, and to the regular astigmatism, acceptable for normal people, with preoperative rules Astigmatism patients this is the best surgical approach.