近视眼与正视眼近距离阅读后黄斑区视网膜厚度变化的区域差异性  

Regional variations of retina macular thickness changes after near reading performance in emmetropia and myopia

作　　者：钱学翰[1] 

机构地区：[1]天津医科大学眼科中心,天津医科大学眼视光学院,天津300070

出　　处：《南京医科大学学报（自然科学版）》2010年第7期1022-1025,共4页Journal of Nanjing Medical University(Natural Sciences)

摘　　要：目的:比较中低度近视眼与正视眼近距离阅读后黄斑区视网膜厚度变化的区域差异性。方法:使用光学相干断层扫描技术,将黄斑区视网膜分为9个不同区域分别计算视网膜厚度,对比分析中低度近视与正常人近距离阅读后黄斑区视网膜厚度变化的区域性差异。结果:中低度近视与正视眼相比,黄斑区视网膜厚度在颞外象限、鼻外象限和外下象限视网膜厚度变薄;近距离阅读后,正视眼黄斑区视网膜厚度未出现变化,中低度近视眼颞外象限黄斑区视网膜厚度出现变化。结论:黄斑区视网膜厚度区域性差异与屈光状态有关;近距离阅读后,中低度近视眼与正视黄斑区视网膜厚度变化存在区域性差异。Objective：To compare regional variations of retina macular thickness after near reading performance under binocular viewing conditions in emmetropic and myopic subjects.Methods：Retina macular thicknesses of 9 different areas in the right eye were measured in emmetropes and myopes before and after binocular near reading using the by optic coherence tomography（OCT）.Results：There was no significant difference in central and inner ring（1～3 mm）macular thicknesses and in volumes between emmetropic and myopic eyes（P0.05）.The myopic subjects had significantly lower macular thickness than that of the emmetropic subjects in temporal outer（213.0±12.6 vs 225.1±9.5 μm P0.05）,nasal outer（260.3±14.5 vs 272.3±7.2 μm P0.05）,and inferior outer quadrant（224.6±12.9 vs 238.9±8.2 μm P0.05）.The macular thickness had significantly changes after binocular reading task in myopic temporal outer quadrant,while had no changes in emmetropic eye.Conclusion：Retinal thicknesses are related to refractive status in normal subjects with regional variations in correlation within macular region.Regional variations of retina macular changes were found binocular near reading performance in emmetropia and myopia.

关 键 词：近视 视网膜厚度 近距离阅读 光学相干断层扫描技术 

分 类 号：R774[医药卫生—眼科]