Development and Gender Differences in Dynamic and Kinetic Visual Acuities in Children from 8 to 17 Years of Age

This study was conducted to elucidate the development and gender differences in dynamic and kinetic visual acuities in children from 8 to 17 years of age. The subjects were 867 boys and girls. The test parameters were static visual acuity, kinetic visual acuity, and dynamic visual acuity and the test was done using a method that allowed evaluation of many subjects in a short time. The speed at which the target moved started at 40 rpm and was reduced gradually thereafter in measurement of dynamic visual acuity. In measurement of kinetic visual acuity, the target moved at 30 kilometers per hour. The results indicated that the dynamic visual acuity improved gradually with age and a significant (p<0.01) gender difference was noted. However, there were no changes or gender difference in kinetic visual acuity. Therefore it was understood that there was a difference in the developmental patterns for dynamic and kinetic visual acuities.