Optic disk ovality as an index of tilt and its relationship to myopia and perimetry
Optic disk ovality as an index of tilt and its relationship to myopia and perimetry
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DOI：
10.1016/j.ajo.2004.08.076
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发表时间：
2005-02-01
影响因子：
4.2
通讯作者：
Aung, T
中科院分区：
文献类型：
--
作者：
Tay, E;Seah, SK;Aung, T
目的：探讨视盘卵形与近视屈光不正、眼轴长度和视野的关系。设计：前瞻性观察性病例系列。方法：随机招募150名男性近视患者。在所有病例中，随机选择一只眼睛，进行主观屈光、裂隙灯检查、压平眼压、角镜检查、a超扫描、眼底镜检查和彩色视盘立体摄影。使用最小与最大椎间盘直径之比（倾斜指数）评估椎间盘椭圆度。小于或等于0.8的比率被认为是显著的磁盘倾斜。视野测试采用静态自动阈值验光法，采用两种光学校正方法：试验眼镜和隐形眼镜。结果：在总样本中，有137名受试者完成了研究。平均年龄21.2 +/- 1.1岁，平均球等效度-6.36 +/- 3.56屈光度。平均卵圆比为0.83±0.09；55例（40.2%）患者视盘明显倾斜。视盘椭圆度（倾斜）越大，近视程度越深（P = 0.009），视轴长度越长（P = 0.009）；95.6%的受试者经两种光学校正后视野正常。使用多元线性回归分析，较大的倾斜度与较高的试验镜片平均缺陷独立相关(P
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 less than or equal to 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