J Korean Ophthalmol Soc.  2007 Jul;48(7):1012-1016.

A Case of Low Vision Device Application in a Patient with Visual Acuity Counting Fingers

• Hwang JS
• Han YK
• Kwon JW

Abstract

PURPOSE: To report the successful application of a Keplerian telescope in a low vision patient whose visual acuity was counting fingers, which is typically a difficult range for LVA adaptation.
METHODS
We used telescopes, distance low vision devices, in a 36-year-old man whose visual acuity, because of congenital corneal opacity, was limited to hand movement in his left eye and to counting fingers in his right eye. The objective was to improve his ability to participate in outdoor activities.
RESULTS
Even though the patient's visual acuity was seemingly beyond improvement, his visual acuity was improved to the level of 20/100 with a distance low vision device, a Keplerian telescope 8 x 30.
CONCLUSIONS
In the case of patients whose visual acuity is worse than counting fingers, it is usually difficult to improve poor vision by using telescopes for distance. However, in spite of restricted adaptation, low vision telescopes can be used to produce good results in low vision patients.

Keyword

Low vision; Keplerian telescope

MeSH Terms

Adult
Corneal Opacity
Fingers*
Hand
Humans
Telescopes
Vision, Low*
Visual Acuity*