December 2001
Volume 1, Issue 3
Vision Sciences Society Annual Meeting Abstract  |   December 2001
Attention deficits in children with anisometropic amblyopia
Author Affiliations
  • P. S. Paul
    Dept. of Psychology, University of British Columbia, Vancouver, B.C., Canada
  • D. Giaschi
    University of British Columbia, Vancouver, B.C., Canada
  • P. Cavanagh
    Harvard University, Cambridge, MA, USA
  • R. Cline
    British Columbia's Children's Hospital, Vancouver, B.C., Canada
Journal of Vision December 2001, Vol.1, 80. doi:
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      P. S. Paul, D. Giaschi, P. Cavanagh, R. Cline; Attention deficits in children with anisometropic amblyopia. Journal of Vision 2001;1(3):80.

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      © ARVO (1962-2015); The Authors (2016-present)

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We showed previously that children with amblyopia show significant deficits in motion-defined form perception (Giaschi et al., 1992, IOVS). These deficits are found in both the amblyopic and the nonamblyopic fellow eye. Performance on low-level direction-discrimination tasks is often normal in these children (Giaschi et al., 1998, ARVO). The purpose of this study was to examine performance of amblyopes on high-level motion tasks based on attentive tracking. We tested each eye of 8 children with unilateral anisometropic amblyopia (9 to 16 years old) and 20 age-matched controls on 1 low-level motion task and 4 high-level motion tasks. Children with amblyopia showed similar performance to controls in both eyes on the low-level motion coherence task and on two high-level motion tasks: the maximum number of targets that can be tracked in a multiple-item tracking task; and the perception of “long-range” apparent motion in a four-dot quartet display. However, they showed significantly worse performance than controls in both eyes on the maximum speed for tracking a single target, and in visual search for a biological-motion target, two tasks that are linked in other studies to limits of temporal attention (Battelli et al., 2000, VSS; Verstraten et al., 2000, Vis. Research). These results suggest that amblyopia may be accompanied by a loss in both eyes of some aspects of temporal attention. In contrast, a recent report finds deficits of spatial attention in the amblyopic eye of adults with strabismic amblyopia (Sharma et al., 2000, Nature Neuroscience).

Paul, P.S., Giaschi, D., Cavanagh, P., Cline, R.(2001). Attention deficits in children with anisometropic amblyopia [Abstract]. Journal of Vision, 1( 3): 80, 80a,, doi:10.1167/1.3.80. [CrossRef] [PubMed]

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