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Boot, F. H.; Pel, J .J. M.; Evenhuis, H. M.; van der Steen, J. – Research in Developmental Disabilities: A Multidisciplinary Journal, 2012
It is generally assumed that children with intellectual disabilities (ID) have an increased risk of impaired visual information processing due to brain damage or brain development disorder. So far little evidence has been presented to support this assumption. Abnormal visual orienting behavior is a sensitive tool to evaluate impaired visual…
Descriptors: Visual Impairments, Down Syndrome, Cerebral Palsy, Visual Acuity
Colenbrander, August – Journal of Visual Impairment & Blindness, 2009
This article provides a terminological framework to show the relationships among different types of visual deficits. It distinguishes between visual functions, which describe how the eye and the lower visual system function, and functional vision, which describes how a person functions. When visual functions are disturbed, the term "visual…
Descriptors: Visual Acuity, Optics, Partial Vision, Neurological Impairments