视网膜脱离手术对角膜前表面屈光改变的临床研究

Clinical Observation of Changes on the Anterior Corneal Radius of Curvature after Retinal Detachment Surgery

用Javal Schizs角膜曲率计对二组总计62眼的角膜前表面曲率半径、屈折力和散光进行了测量,31眼对照组和31眼视网膜脱离术前组比较,角膜前表面曲率半径和屈折力没有显著性差异(P>0.05),散光度有显著性差异(P<0.05)。31眼视网膜脱离术后,巩膜缩短组散光有显著变化(P<0.01),产生高度散光,巩膜环扎组散光变化没有大的临床意义。

The radius of curvature of the anterior corneal surface and its refractive power and astigmatism were measured with the Javal Schi(?)s Keratometer in two groups totalling 62 eyes, In the groups of 31 eyes before retinal detachment surgery and 31 eyes of normal control, the radius of curvature and refractive power were not significantly different between the two groups (P>0.05), However, the astigmatism was significantly different (P<0.05). In 31 eyes after retinal detachment surgery, the astigmatism varied significantly following segmental scleral bucking, a high degree of astigmatism may be produced (P<0.01). Encircling procedure is of no great clinical importance (P>0.05).