Visual acuity development in infants and young children,as assessed by operant preferential looking |
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| Authors: | D Luisa Mayer Velma Dobson |
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| Institution: | Department of Psychology, University of Washington, Seattle, WA 98195, U.S.A. |
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| Abstract: | The operant preferential looking (OPL) procedure was used to obtain psychophysical estimates of visual acuity for square-wave gratings in 50 children between 5 months and 5 yr of age. Acuity developed systematically with age, from 6 min arc (5 c/deg) at 5 months to 0.75 min arc (40 c/deg) at 5 yr, a value close to adult acuity tested with the OPL stimuli. In addition, psychometric functions became steeper with age, suggesting that criterion for responding varies with age. OPL offers the possibility of using a single procedure to follow acuity development across a wide age range. |
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| Keywords: | Reprint requests should be sent to Dr D Luisa Mayer Department of Ophthalmology Children's Hospital Medical Center 300 Longwood Avenue Boston MA 02115 U S A |
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