巩膜环扎加压术后眼轴与屈光状态的改变

目的：探讨视网膜脱离巩膜环扎加压术后眼部屈光状态的改变。方法：用眼科A超、检影验光等对86例原发性视网膜脱离患者的86只患眼手术前1d及术后1、4、12w时的眼轴长度、眼屈光度等进行测量并将结果进行比较。结果：眼轴长度在术后1、4、12w时均较术前增长(P＜0．01)。眼屈光度在术后1、4、12w时均较术前增加，且向负值偏移(术后1、4w，P＜0．015术后12w，P＜0．05)。结论：巩膜环扎加压术后眼轴长度和屈光状态的变化与眼内嵴有关，术后眼轴增长是眼屈光度负值增加的主要因素。

Axial length and refractive changes in the eye after scleral encircling and buckling surgery

Objective:To investigate changes in both axial length and refractive state after scleral encircling and buckling surgery.Methods:86 eyes that were successfully treated for rhegmatogenous retinal detachment with scleral encircling and buckling were measured with A scan ultrasonography and given eye exams 1 day before surgery,as well as l week,4 weeks and 12 weeks after surgery. Both refractive factors,axial length and diopter status of the eyes,were measured and compared pre and post operatively. All surgeries were performed by the same surgeon using a standardized one site technique and peribulbar anesthesia.Results:When compared to the data obtained before surgery,significant increases in both axial length and diopter strength of the eyes were observed on the lst,4th and 12th week after surgery(P<0.01 for both factors,but P>0.05 for diopter strength in the 12th week after surgery). Diopter strength had a tendency to shift to a negative value.Conclusion:Axial length and diopter strength increased after surgery. This suggests that the myopic shift after scleral encircling and buckling surgery may be primarily caused by the increase in axial length.[