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观察小梁切除术后角膜散光的变化 ,并分析其原因。方法 :对 53例、65眼行小梁切除术 ,测量术前及术后不同时期的眼压、角膜散光度数及轴向。结果 :术后 1周眼压最低 ,散光度数最大 ,循规性散光增加 ,逆规性散光减少 ,无散光状态消失 ,与术前相比 ,差异有高度显著性 (P<0 .0 1 )。 2周后随着眼压回升 ,术后反应的减轻 ,切口的愈合 ,上述症状有所变化 ,1月时基本稳定 ,但循规性散光和无散光状态与术前相比仍有高度显著性 (P<0 .0 1 )。结论 :小梁切除术后角膜散光以循规性散光为主 ,其主要原因是手术创伤和眼压变化。
To observe the change of corneal astigmatism after trabeculectomy and to analyze the reason. Methods: Fifty-three and 65 eyes underwent trabeculectomy. The intraocular pressure, corneal astigmatism and axial were measured preoperatively and postoperatively. Results: One week after operation, the IOP was the lowest, the degree of astigmatism was the highest, the regular astigmatism was increased, the astigmatism was reduced, and astigmatism disappeared. The difference was highly significant compared with that before operation (P <0.01) . After 2 weeks, with the rise of intraocular pressure, the reduction of postoperative reaction and the healing of incision, the above symptoms changed and remained stable in January, but the compliance astigmatism and non-astigmatism status were still highly significant P <0 .0 1). CONCLUSION: Corneal astigmatism following trabeculectomy is predominantly with regular astigmatism, mainly due to surgical trauma and changes in intraocular pressure.