Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/17018
Title: Dichoptic training improves contrast sensitivity in adults with amblyopia
Authors: Li, J
Spiegel, DP
Hess, RF
Chen, Z
Chan, LYL
Deng, D
Yu, M
Thompson, B
Keywords: Amblyopia
Binocular vision
Contrast sensitivity
Dichoptic training
Perceptual learning
Issue Date: 2015
Publisher: Pergamon Press
Source: Vision research, 2015 How to cite?
Journal: Vision research 
Abstract: Dichoptic training is designed to promote binocular vision in patients with amblyopia. Initial studies have found that the training effects transfer to both binocular (stereopsis) and monocular (recognition acuity) visual functions. The aim of this study was to assess whether dichoptic training effects also transfer to contrast sensitivity (CS) in adults with amblyopia. We analyzed CS data from 30 adults who had taken part in one of two previous dichoptic training studies and assessed whether the changes in CS exceeded the 95% confidence intervals for change based on test-retest data from a separate group of observers with amblyopia. CS was measured using Gabor patches (0.5, 3 and 10. cpd) before and after 10. days of dichoptic training. Training was delivered using a dichoptic video game viewed through video goggles (n = 15) or on an iPod touch equipped with a lenticular overlay screen (n = 15). In the iPod touch study, training was combined with anodal transcranial direct current stimulation of the visual cortex. We found that dichoptic training significantly improved CS across all spatial frequencies tested for both groups. These results suggest that dichoptic training modifies the sensitivity of the neural systems that underpin monocular CS.
URI: http://hdl.handle.net/10397/17018
ISSN: 0042-6989
DOI: 10.1016/j.visres.2015.01.017
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