透过一层昏暗的光影。

Through a shade darkly.

作者信息

Purvin V

机构信息

Midwest Eye Institute, and Department of Ophthalmology, Indiana University School of Medicine, Indianapolis, USA.

出版信息

Surv Ophthalmol. 1999 Jan-Feb;43(4):335-40. doi: 10.1016/s0039-6257(98)00050-2.

DOI:10.1016/s0039-6257(98)00050-2

PMID:10025515

Abstract

A 43-year-old man complained of difficulty seeing in dim light (nyctalopia). A prolonged photostress test and abnormal electroretinogram confirmed retinal rather than optic nerve dysfunction. Vitamin A deficiency secondary to remote ileal-jejunal bypass was diagnosed, and his visual symptoms and signs reversed with oral vitamin A supplementation.

摘要

一名43岁男性主诉在暗光下视物困难（夜盲症）。延长的光应激试验和异常的视网膜电图证实为视网膜而非视神经功能障碍。诊断为因既往回肠-空肠旁路手术继发的维生素A缺乏症，口服补充维生素A后其视觉症状和体征有所改善。