ID 54591
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Author
Miyata, Manabu Department of Ophthalmology and Visual Sciences, Kyoto University Graduate School of Medicine
Nakahara, Ryuichi Departments of Orthopedic Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
Hamasaki, Ichiro Departments of Ophthalmology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
Hasebe, Satoshi Department of Ophthalmology 2, Kawasaki Hospital, Kawasaki Medical School
Furuse, Takashi Department of Ophthalmology 2, Kawasaki Hospital, Kawasaki Medical School
Ohtsuki, Hiroshi Okayama Saiseikai General Hospital
Abstract
Although a 0.3 Bangerter filter, which reduces visual acuity, is frequently used for treating moderate amblyopia, the effects on gross stereopsis are not well known. This study quantitatively evaluated whether gross stereopsis is degraded by a Bangerter filter. Seven healthy subjects (median age: 29 years) participated in this psychophysical study. Targets with crossed disparities of 1°, 2°, 3°, 4°, and 5° were randomly presented on a three-dimensional television display. The subjects indicated the point at which the targets popped out from the television screen (matching method). The distance from the screen to the point was defined as the degree of stereopsis. This experiment was performed with and without a 0.3 Bangerter filter. The corrected monocular visual acuities were decreased to about 20/63 by the filter in all subjects. No significant difference was observed for any of the disparities (1°-5°), between the degree of stereopsis visualized with and without filters for either the dominant or the non-dominant eye. The degree of stereopsis was not degraded by the reduced visual acuity induced by the use of 0.3 Bangerter filters. In this regard, the use of 0.3 Bangerter filters may be considered safer than occlusion eye patches for the patients with normal binocular vision.
Keywords
amblyopia
Bangerter filter
binocular vision
stereopsis
Amo Type
Original Articles
Published Date
2016-10
Publication Title
Acta Medica Okayama
Volume
volume70
Issue
issue5
Publisher
Okayama University Medical School
Start Page
339
End Page
344
ISSN
0386-300X
NCID
AA00508441
Content Type
Journal Article
language
英語
Copyright Holders
CopyrightⒸ 2016 by Okayama University Medical School
File Version
publisher
Refereed
True
PubMed ID
Web of Sience KeyUT