A Field Expander for Patients with Retinitis PigmentosaA Clinical Study
作者:
WARREN KENNEDY,
JOHN ROSTEN,
LAURA YOUNG,
KENNETH ClUFFREDA,
MILTON LEVIN,
期刊:
American Journal of Optometry and Physiological Optics
(OVID Available online 1977)
卷期:
Volume 54,
issue 11
页码: 744-755
ISSN:0093-7002
年代: 1977
出版商: OVID
关键词: visual fields;field expander;low vision;optical aid;retinitis pigmentosa;minification;mobility
数据来源: OVID
摘要:
An inexpensive, commercially available optical device was tested on 10 patients with retinitis pigmentosa to determine its value as a field expander for scanning and as an aid to mobility. Visual acuity and visual fields were measured with and without the expander, and the patients' subjective responses were monitored by a questionnaire that was administered at regular intervals during a 2− to 4-week period between test sessions. Six of the 10 subjects considered the device helpful in at least 1 important visual task and planned to continue using it.
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