Use of spectacle mounted telescope systems by the visually impaired.

Journal Article (Clinical Trial;Journal Article;Multicenter Study)

BACKGROUND: Spectacle mounted telescope low vision aids are designed to magnify objects Spectacle telescopes are often rejected by the visually impaired because of their unusual cosmetic appearance which may call attention to their disability. METHODS: Fifty-six subjects were recruited at four independent low vision clinics and divided into two categories: 24 were current wearers of expanded field spectacle mounted telescope systems, and 32 were new wearers. New wearers underwent a randomized cross-over trial, comparing the experimental device (Ocutech VES) to one of two controls (DFV Expanded Field or Walter's Keplarian Close-focus Telescope). RESULTS: Our data show that previous telescope wearers increased their use of telescopes after introduction of the experimental device (Ocutech VES) and there was an equivalent utilization rate for new wearers. CONCLUSIONS: Visual activity patterns are not a sensitive measure of telescope benefit, but frequency of use patterns do change and appear to demonstrate a valid benefit of spectacle mounted telescopes for the visually impaired.

Full Text

Duke Authors

Cited Authors

  • Greene, HA; Pekar, J; Brilliant, R; Freeman, PB; Lewis, HT; Siwoff, R; Madden, DJ; Westlund, RE

Published Date

  • July 1993

Published In

Volume / Issue

  • 64 / 7

Start / End Page

  • 507 - 513

PubMed ID

  • 8376720

International Standard Serial Number (ISSN)

  • 0003-0244


  • eng

Conference Location

  • United States