[一种视障人士阅读辅助工具]

Klin Monbl Augenheilkd. 1983 Jul;183(1):63-5. doi: 10.1055/s-2008-1054876.

A new reading aid for the visually handicapped is described. It consists of a normal pair of fieldglasses and a mirror system, and can be used either monocularly or binocularly. It features an unusually long working distance of 210 mm, regardless of magnification.

介绍了一种新型视障人士阅读辅助工具。它由一副普通的双筒望远镜和一个镜子系统组成，可单目或双目使用。其特点是无论放大倍数如何，工作距离都异常长，达210毫米。