视盘椭圆度作为视盘倾斜指数及其与近视和视野的联系

作     者：Tay E. Seah S.K. Chan S.- P. 陈立军 

作者机构：Singapore National Eye Centre 11 Third Hospital Avenue Singapore 168751 Singapore 

出 版 物：《世界核心医学期刊文摘（眼科学分册）》 (Digest of the World Core Medical Journals:Ophthalmology)

年 卷 期：2005年第1卷第7期

页      面：6-7页

学科分类：1010[医学-医学技术（可授医学、理学学位）] 10[医学] 

主　　题：椭圆度 前房角镜检查 眼轴长度 等量球镜 屈光检查 裂隙灯检查 屈光不正 眼底检查 接触镜 立体成像 

摘      要：Purpose: To examine the association of optic disk ovality with myopic refractive error, axial length, and the visual field. Design: Prospective observational case series. Methods: The study included 150 randomly recruited male subjects with myopia. In all cases, one eye was randomly selected, and subjective refraction, slit- lamp examination, applanation tonometry, gonioscopy, A- scan ultrasonography, funduscopy, and color optic disk stereo photography were performed. Disk ovality was assessed using the ratio of minimum to maximum disk diameter (index of tilt). A ratio of ≤ 0.8 was considered as significant disk tilt. Visual fields were tested using static automated threshold perimetry with two methods of optical correction: trial lenses and contact lenses. Results: Of the total sample, 137 subjects completed the study. Mean age was 21.2± 1.1 year, and mean spherical equivalent was- 6.36± 3.56 diopters. Mean ovality ratio was 0.83± 0.09;55 subjects (40.2% ) had significant tilted optic disks. Greater optic disk ovality (tilt) correlated with greater myopia (P=.009) and longer axial length (P =.009); 95.6% of subjects had normal visual fields with both methods of optical correction. Using multiple linear regression analysis, greater tilt was independently related to a higher mean defect on testing with trial lenses (P .01). Conclusions: Increased optic disk tilt was associated with higher myopia and reduced sensitivity on field testing. These factors are important in the assessment of glaucoma in patients with myopia.