Brown A M, Dobson V, Maier J
Department of Psychology, University of Washington, Seattle 98195.
Vision Res. 1987;27(10):1845-58. doi: 10.1016/0042-6989(87)90113-1.
Visual acuity of 2-month-old infants and adults was measured between -2.6 and +2.7 log10 cd/m2 using standard psychophysical techniques. The acuity-vs-luminance curve was similar for infants and adults: acuity improved with increasing luminance until 0.0 log cd/m2, and was constant above that luminance. However, the infant curve was slightly shallower than the adult curve, and infant acuity was over 3.5 octaves poorer than adult acuity at all luminances. The infant acuity-vs-luminance curve was compared with adult curves measured 21 degrees and 51 degrees from fixation, and at 21 degrees with +8, +/- 3.25 and 0.0 D of experimental refractive error. The results indicated that infants' poor acuity cannot be fully explained by: refractive error, foveal immaturity, scotopic detection of stimuli, functional similarity between infant vision and adult vision in the periphery, or by an overall reduction in visual sensitivity.
使用标准心理物理学技术，在-2.6至+2.7 log10 cd/m2的范围内测量了2个月大婴儿和成年人的视力。婴儿和成年人的视力与亮度曲线相似：随着亮度增加，视力在达到0.0 log cd/m2之前有所改善，在该亮度以上则保持恒定。然而，婴儿的曲线比成年人的曲线略浅，并且在所有亮度下，婴儿的视力比成年人的视力差超过3.5个八度。将婴儿的视力与亮度曲线与在注视点21度和51度处测量的成年人曲线进行了比较，并在21度处与实验性屈光不正为+8、+/- 3.25和0.0 D的成年人曲线进行了比较。结果表明，婴儿视力不佳不能完全由以下因素解释：屈光不正、中央凹不成熟、暗视刺激检测、婴儿视力与成人周边视力的功能相似性或视觉敏感性的整体降低。
