基于双眼的知觉训练对有无遮盖史的儿童弱视的影响
Alternative TitleDichoptic perceptual training in juvenile amblyopes with or without patching history
Jun-Yun Zhang; Xiang-Yun Liu
2016
Conference Name2016年第一届北京视觉科学会议
Conference Date2016-07
Conference Place北京
Funding Organization中国科学院心理研究所
Other Abstract

PURPOSE: Dichoptic training is becoming a popular tool in amblyopia treatment. Here we investigated the effects of dichoptic training on juvenile amblyopia no longer responsive to patching treatment (PT group) or never patch treated (NPT group).
METHODS & RESULTS: Training consisted of three stages. (1) 10 PT and 10 NPT amblyopes (8-17 years, 11-anisometropic, 4-ametropic, 1-strabismus, 4-mixed) received dichoptic de-masking training for 40 hours. They used AEs to practice contrast discrimination of Gabors that were dichoptically masked by a band-filtered noise pattern simultaneously presented in NAEs. Dichoptic learning is indexed by the increase of maximal tolerable noise contrast (TNC) for AE contrast discrimination. Training improved maximal TNC by 600% in PT and 700% in NPT, which translated to stereoacuity improvements by 5.4-lines in PT and 3.6-lines in NPT, and AE visual acuity improvements by 1.1-lines in PT and 2.2-lines in NPT. (2) The amblyopes further received stereopsis training for another 40 hours. Training improved stereoacuity by 3.3-lines in PT and 0.3-lines in NPT, and AE acuity by 0 line in PT and 0.4 lines in NPT. Seven PT amblyopes regained normal stereoacuity (20~50 arcsec) after two stages of training. (3) Extra monocular AE grating acuity training (30 hours) failed to improve grating acuity in both groups. Neither did it produce further AE acuity and stereoacuity gains. Altogether, the stereoacuity gain was associated with pre-training interocular suppression but not with a reduction of interocular acuity di?erence in most amblyopes.
CONCLUSIONS: Dichoptic training can improve and even restore some juvenile amblyopes’ stereoacuity, especially those with mild amblyopia. The dissociation of stereoacuity gain and change of interocular acuity difference suggests that the stereoacuity gains may not result from reduced interocular suppression in most amblyopes, rather the amblyopes may have learned to better readout the stimulus information to improve stereopis.

Keyworddichoptic learning amblyopia patching history
Subject Area感知觉心理学
URL查看原文
Indexed By其他
Language英语
Document Type会议论文
Identifierhttp://ir.psych.ac.cn/handle/311026/20866
Collection心理所主办、承办、协办学术会议_2016年第一届北京视觉科学会议_会议摘要
Affiliation1.Department of Psychology, Peking University, Beijing, China, 100871
2.Department of Ophthalmology, Tengzhou Central People’s Hospital, Tengzhou, Shandong Province, China, 277500
Recommended Citation
GB/T 7714
Jun-Yun Zhang,Xiang-Yun Liu. 基于双眼的知觉训练对有无遮盖史的儿童弱视的影响[C]. 见:2016年第一届北京视觉科学会议. 北京. 2016-07.http://vision.csp.escience.cn/dct/page/1.
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