论文信息 - Infant astigmatism measured by photorefraction.

Infant astigmatism measured by photorefraction.

Photorefraction of a sample of 93 infants of ages 1 day to 12 months showed that 63 percent of the subjects had astigmatism of 0.75 diopter or greater, and 12 percent greater than 2 diopters. Seventy percent of these astigmatisms were in the horizontal-vertical meridians. By comparison, only 8 percent of a sample of 26 adults tested by the same method showed astigmatism (all 0.75 to 1 diopter). The high incidence of infant astigmatism has implications for critical periods in human visual development and for infant acuity.

[1] S. Appelle. Perception and discrimination as a function of stimulus orientation: the "oblique effect" in man and animals. , 1972, Psychological bulletin.

[2] T. L. Hickey,et al. Postnatal development of the human lateral geniculate nucleus: relationship to a critical period for the visual system , 1977, Science.

[3] Janette Atkinson,et al. Contrast sensitivity of the human infant for moving and static patterns , 1977, Vision Research.

[4] M S Banks,et al. Sensitive period for the development of human binocular vision , 1975, Science.

[5] R D Freeman,et al. Meridional amblyopia: evidence for modification of the human visual system by early visual experience. , 1973, Vision research.

[6] H C Howland,et al. Photorefraction: a technique for study of refractive state at a distance. , 1974, Journal of the Optical Society of America.