基于双眼的知觉训练对有无遮盖史的儿童弱视的影响
其他题名Dichoptic perceptual training in juvenile amblyopes with or without patching history
Jun-Yun Zhang; Xiang-Yun Liu
2016
会议名称2016年第一届北京视觉科学会议
会议日期2016-07
会议地点北京
会议主办者中国科学院心理研究所
其他摘要

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.

关键词dichoptic learning amblyopia patching history
学科领域感知觉心理学
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收录类别其他
语种英语
文献类型会议论文
条目标识符http://ir.psych.ac.cn/handle/311026/20866
专题心理所主办学术会议_2016年第一届北京视觉科学会议_会议摘要
作者单位1.Department of Psychology, Peking University, Beijing, China, 100871
2.Department of Ophthalmology, Tengzhou Central People’s Hospital, Tengzhou, Shandong Province, China, 277500
推荐引用方式
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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