观察视乳头生理凹陷的大小、形态和测量凹陷与视乳头直径之比值(杯/盘)是近年来受人重视的课题。对开角型青光眼的早期诊断、病情演变的估计和疗效的判断都有一定的价值。但测量和分析的方法较难标准化。立体眼底摄影法虽较精确但不能广泛应用。作者用裂隙灯前置镜方法对580正常人(4-91岁,眼压均≤18mmHg)作了观测。并对其中289人加用直接眼底镜检查以资对照。测量其杯盘比(C/D),并探讨了C/D与年龄、性别、屈光不正和眼压之间的关系。作者强调以视神经纤维离开视网膜平面向后弯曲的一点作为杯缘的标志。在裂隙灯前置镜下 Observing the size, shape and measuring the ratio of the depression and the diameter of the papilla (cup / disk) is a subject that people pay attention to in recent years. The early diagnosis of open-angle glaucoma, the evolution of the disease estimates and efficacy of judgment have a certain value. However, the methods of measurement and analysis are more difficult to standardize. Although the three-dimensional fundus photography is more accurate but can not be widely used. The authors used slit lamp front mirror method of 580 normal people (4-91 years, intraocular pressure were ≤ 18mmHg) was observed. 289 of them plus direct ophthalmoscopy to control. The cup-to-cup ratio (C / D) was measured and the relationship between C / D and age, gender, refractive error and IOP was explored. The authors emphasize the point that the fibers of the optic nerve bend backwards away from the plane of the retina as a sign of the cup rim. Slit lamp in front of the mirror