摘要
目的 探讨正常人不同类型视乳头及早期青光眼患者视乳头形态学特征 ,以指导青光眼的早期诊断。方法 将收集到的眼底照片分为 4组 :正常人小视乳头组 4 1只眼 ,正常人大视乳头组 4 0只眼 ,正常人大或小视乳头组 4 2只眼 ,早期开角型青光眼组 4 5只眼。利用计算机图像分析技术 ,测量视乳头、盘沿、视杯面积和周围 (每 10 0 )盘沿宽度。结果 (1)正常人不同类型视乳头组的盘沿宽度曲线均在下或上方形成双峰 ,在鼻、颞侧形成谷底。大视乳头组下方盘沿最宽 ,小视乳头组上方盘沿最宽 ,鼻侧次之 ,颞侧最窄。 (2 )早期青光眼盘沿宽度曲线下或上方双峰消失 ,其曲线低于鼻侧象限、高于颞侧象限。 (3)经多因素逐步判别分析 ,盘沿面积加杯 /盘比值的正确判断率为 85 7% ,以系列盘沿宽度为指标 ,下方偏颞侧 (6∶2 0 )和上方偏鼻侧 (1∶0 0 )两个盘沿宽度最为相关 ,其正确判断率为 90 6 %。结论 评价盘沿形态时应以其自身的鼻侧盘沿宽度作为标准 ,比较其上、下方盘沿宽度是否变窄 。
Objective To investigate the morphological characteristics of neuroretinal rim in different types of the normal optic disc and early glaucoma. Methods The subjects were divided into four groups: (1) 41 eyes with physiologic small disc. (2) 40 eyes with physiologic large disc. (3) 42 eyes with normal size disc. (4) 45 eyes with early glaucoma. The optic disc area, neuroretinal rim area, cup area and a circuit (each 10°) neuroretinal rim widths were measured by using computerized imaging system. The curve of sequential neuroretinal rim widths was made from temporal to superior, nasal, and inferior. Results (1) The morphological characteristic of the curve of sequential rim widths in normal eyes was that there were double humps in inferior and superior section, double valley in nasal and temporal section. (2) The loss of double humps of inferior and superior section was at the curve of sequential rim widths in early glaucoma. It was lower than nasal and higher than temporal section. (3) The inferior rim width of the physiologic large disc was the widest, while the superior rim width was the widest in the physiologic small disc, followed by the nasal and temporal section. (4) The correct discrimination ratio was 85.7% and 90.6% with rim area plus C/D and sequential neuroretinal rim widths (inferior 6∶20 and superior 1∶00 neuroretinal rim widths were the most effective) respectively in the multivariate discrimaination. Conclusion The nasal neuroretinal rim width itself is regarded as the standard, and compare the superior and inferior with nasal neuroretinal rim width in estimating the morphological characteristics of neuroretinal rim. This way is very effective in discriminating physiologic large optic cup from the cup of early glaucoma.
出处
《中华眼科杂志》
CAS
CSCD
北大核心
2002年第6期325-328,共4页
Chinese Journal of Ophthalmology
关键词
开角型青光眼
视盘
形态学
Glaucoma, open angle
Optic disc
Morphology
