Journal
VISION RESEARCH
Volume 47, Issue 20, Pages 2616-2626Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.visres.2007.07.002
Keywords
congenital cataract; visual deprivation; visual development; illusory contours
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Higher visual functions were investigated in patients treated for bilateral congenital cataracts in two experiments. Participants were asked to detect either real or illusory contours (Kanizsa squares in Experiment I or one of four different Kanizsa contours in Experiment 2) among distractor items. Compared to normally sighted participants matched for age, gender and education, cataract patients treated after the age of 5-6 months took relatively longer to detect Kanizsa figures (Experiments I and 2) and they had higher miss rates (Experiment 2). The present results suggest that the ability of visual feature binding depends on early visual input and is permanently impaired if patterned vision is prevented in early infancy for 5 months or more. (c) 2007 Elsevier Ltd. All rights reserved.
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