LASIK术前近视眼神经纤维层厚度光学相干断层扫描分析

目的:探讨近视眼视网膜神经纤维层(retinal nerve fiber layer,RNFL)厚度的变化。方法:随机抽取准分子激光原位角膜磨镶术(LASIK)术前的近视眼患者53例106眼和正常对照组53例106眼利用光学相干断层扫描仪(OCT)进行以视盘为中心,3.4mm为半径的RNFL测量,计算上、下、鼻、颞四个象限及平均RNFL厚度,分别与正常组比较,并进行统计学分析。结果:近视组与正常对照组平均RNFL厚度相比变薄且有显著性差异(P<0.05)。近视组上方、下方、鼻侧象限RNFL厚度与正常组相比变薄且有显著性差异(P<0.05),颞侧象限亦变薄但无显著性差异(P>0.05)。结论:近视眼上方、下方、鼻侧象限及平均RNFL厚度变薄,鼻侧RNFL厚度差异明显,且具有显著性差异。

Analysis of the retinal nerve fiber layer by optical cohere tomography before LASIK for myopic eye

AIM:To study the deep of retinal nerve fiber layer (RNFL) for myopic eye. ·METHODS:Randomly draw 53 cases (106 eyes) before LASIK and normal 53 cases (106 eyes) too as contral group. By OCT to measure the deep of RNFL,which is the area of the radial is 3.4mm aroud the optic disc. Record the deep of up,down,nasal and temple and calculate the mean then to compare with the contral group respectively by statistics. ·RESULTS:The deep of myopic is thinner than the contral and the difference is significant (P<0.05) ,which is only the up ,down and nasal. ·CONCLUSION:The RNFL deep of myopic is obviously thin and especially is nasal.