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Frequency of non-arteritic anterior ischaemic optic neuropathy in adult Chinese: The Beijing Eye Study
  1. Yaxing Wang1,
  2. Liang Xu1,
  3. Jost B Jonas2
  1. 1Beijing Institute of Ophthalmology, Beijing Tongren Hospital, Capital University of Medical Science, Beijing, China
  2. 2Department of Ophthalmology, Faculty of Clinical Medicine, Mannheim, University of Heidelberg, Mannheim, Germany
  1. Correspondence to: Professor J B Jonas Beijing Institute of Ophthalmology, Beiging Fongren Hospital, Capital University of Medical Science, 17 Hougou Street, Chong Wen Men, 100005 Beijing, China; jost.jonas{at}

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Non-arteritic anterior ischaemic optic neuropathy (NAION) is an acute optic neuropathy occurring predominantly in small optic nerve heads in elderly patients.1–3 It has been debated which factors, other than old age and a small optic disc size, predispose to the disease. Data on the prevalence of NAION in the general population has so far been scarce.4,5 They have been completely missing for the Chinese. Therefore, the aim of this study was to evaluate the prevalence of optic nerve damage with the features of a preceding NAION in the Beijing Eye Study.

The Beijing Eye Study is a population-based cohort study in Northern China.6 The Medical Ethics Committee of the Beijing Tongren Hospital approved the study protocol and all participants gave their informed consent, according to the …

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