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AIM: To measure the size of the neuroretinal rim, the major variable in the quantitative analysis of the optic nerve head, and its correlations in adult Chinese in a population based setting. METHODS: The Beijing Eye Study, a population-based, cross-sectional cohort study, included 4439 subjects from among 5324 of age of 40+ years invited to participate (response rate 83.4%). This study included a random sample of 781 subjects with normal intraocular pressure (IOP), normal visual fields, and a normal optic nerve head; and a random sample of 84 subjects with an IOP > 21 mmHg. Colour optic disc photographs (30°) were examined morphometrically. RESULTS: In the normal group, the mean (SD) neuroretinal rim area was 1.70 (0.30)2>. It was significantly correlated with optic disc area (rim area = 0.43
Dr. L. Xu, Beijing Institute of Ophthalmology, 17 Hougou Street, Chong Wen Men, 100005 Beijing, China
2.14 Optic disc (Part of: 2 Anatomical structures in glaucoma)