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D L Mayer, V Dobson; Assessment of vision in young children: a new operant approach yields estimates of acuity.. Invest. Ophthalmol. Vis. Sci. 1980;19(5):566-570.
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Behavorial assessment of visual function is now possible in 6- to 24-month-old children through the use of an operant preferential looking technique. Use of the technique to measure grating acuity shows that acuity develops from 6 to 8 min arc at 6 months of age to near adult levels by 2 years.
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