IOLMater测量角膜曲率在白内障手术相关性分析

Correlation analysis on cataract operation in IOLMater measurement of corneal curvature

目的:了解术前角膜散光的性质和程度以及术后角膜散光的趋向和力度,以便制定手术方案,从而最大限度的减少角膜散光,让患者获得较好的非矫正视力。方法:从110例患者中选择符合条件的170只眼,其中男90只眼,女80只眼,年龄50～89岁,用IOLMate(r生物测量)测量每位患者的角膜曲率,测3次取平均值,得出角膜曲率、角膜散光及轴向,从而指导手术选择角膜切口方向及晶体的选择。结果:随年龄增长角膜散光轴向有从顺规性向逆规性转变的趋势(P<0.001)。手术前了解散光轴位及变化趋势,可以更好指导手术者选择手术切口方向,在中高度散光可以选择散光型人工晶体。结论:术前精确测量角膜曲率,了解散光轴向及散光度数,对白内障手术有指导意义。

Objective：To investigate the preoperative corneal astigmatic nature and extent of postoperative corneal astigmatism,tendency and strength in order to take the best of corneal incision and implantation of torie intraoeular lens,maximumly reduce corneal astigmatism, allow patients to obtain better uncorrected vision. Methods： 110 patients were chosen from in line with the conditions of the 170 eyes including 90 eyes in male, 80 in female eyes, aged from 50 to 89 years, with IOLMater measurements for each patient＇s corneal curvature. Corneal curvature, corneal astigmatism and axial were drew from average corneal curvature in measured three times in which the corneal astigmatism axis and corneal astignmtism value differences were statistically analyzed in order to guide the operation selection of corneal incision direction and crystal selection. Results： With the increase of age, the corneal astigmatism axial was tendency from with-the-rule aptitude against the rule of change （P〈0.001）.Understanding the axis of astigmatism and the degree of astigmatism can better guide the choice of operation incision direction and choice of intraoeular lens astigmatism. Conclusion： Preoperative accurate measurement of corneal curvature, understanding of astigmatism axis and astigmatism have the guide significance in cataract operation.