Abstract
We have assessed the feasibility of Preferential Looking (PL), using Teller Acuity Cards, for the estimation of binocular and monocular visual acuities in a group of mentally handicapped adults. Our results show the comparison between grating and recognition acuities, inter-observer variation, success rate, time taken and the sensitivity of this method in identifying monocular visual deficit in this group of subjects. The reasons for success or failure with PL methods in relation to criteria for mental handicap are discussed.
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This work was supported by a grant from the South Western Regional Health Authority and by the National Eye Research Centre, Bristol.
Teller acuity Cards obtainable from Vistech Consultants Inc; 1372 North Fairfield Road, Dayton, OHIO.45432, USA.
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Chandna, A., Karki, C., Davis, J. et al. Preferential Looking in the mentally handicapped. Eye 3, 833–839 (1989). https://doi.org/10.1038/eye.1989.127
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DOI: https://doi.org/10.1038/eye.1989.127