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目的 :探讨小梁切除术对角膜屈光状态的影响及程度。方法 :对 30例 (40只眼 )原发性青光眼手术前后进行角膜地形图检查并对比分析 ,根据术前散光状态分为循规性散光组和逆规性散光组。结果 :手术后 1～ 2周角膜地形图变化与手术前相比循规性散光组散光增加 ,经统计学处理差异有显著性 ,逆规性散光组术后散光较术前减少 ,差异有显著性。角膜不规则参数 (corneairregularmeasurement,CIM )及形状参数 (shapefoctor,SF)也有小波动。手术后 3个月角膜地形图变化与手术前相比差异无显著性。结论 :小梁切除术后早期可产生一定程度的手术源性循规性散光 ,3个月后角膜屈光状态基本回复到术前状态 ,术后早期散光的产生与眼压的变化、手术切口及缝线有关。
Objective: To investigate the effect and extent of trabeculectomy on corneal refractive status. Methods: 30 cases (40 eyes) of primary glaucoma before and after surgery for corneal topography examination and comparative analysis, according to preoperative astigmatism state is divided into regular astigmatism group and reverse-rule astigmatism group. Results: The change of corneal topography at 1 ~ 2 weeks after surgery was significantly higher than that before operation, and the difference was statistically significant Sex. Corneal irregularity parameters (CIM) and shapefoctor (SF) also have small fluctuations. The changes of corneal topography at 3 months after operation showed no significant difference compared with those before operation. CONCLUSIONS: Early postoperative trabeculectomy may produce a certain degree of surgical source follow-up astigmatism. At 3 months, corneal refractive status basically returns to the preoperative state, the postoperative early onset of astigmatism and intraocular pressure changes. The surgical incision And the suture.