Effect of strabismus on the development of vernier acuity and grating acuity in monkeys

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Abstract
The effect of experimental strabismus on the development of vernier acuity and grating acuity was studied in Macaca nemestrina monkeys. Six monkeys were studied longitudinally beginning near 10 days after birth. Four of the six monkeys developed amblyopia. As is true for human strabismic amblyopes, the deficit in vernier acuity was larger than the deficit in grating acuity in the amblyopic monkeys. The developmental data reveal that this differential disruption of vernier acuity can be understood as a result of a slowed developmental process associated with amblyopia.