Courage M L, Adams R J
Department of Psychology, Memorial University of Newfoundland, St John's, Canada.
Vision Res. 1996 Apr;36(8):1207-15. doi: 10.1016/0042-6989(95)00204-9.
Quantitative data on the early morphological development of the human retina show that the peripheral region is relatively more mature than the central region. These results have stimulated researchers to compare the development of visual functions in the central and peripheral regions of the visual field. Here, we used preferential looking to evaluate 1-, 2- and 3-month-old infants' central and peripheral (10 degrees and 30 degrees) monocular visual acuity. There were three findings: (i) both central and peripheral acuities were poor at 1 month, improved over the age range tested, but were still about 3 octaves worse than adults' acuity; (ii) at all ages monocular acuity decreased with increasing eccentricity; (iii) 2- and 3-month-olds showed higher acuity for gratings in the temporal than in the nasal visual field at 30 degrees. The implications of these results for issues in visual development are discussed.
关于人类视网膜早期形态发育的定量数据表明，周边区域相对比中央区域更成熟。这些结果促使研究人员比较视野中央和周边区域视觉功能的发育情况。在此，我们使用优先注视法评估1个月、2个月和3个月大婴儿的中央和周边（10度和30度）单眼视力。有三项发现：（i）1个月大时中央和周边视力均较差，在测试的年龄范围内有所改善，但仍比成年人的视力差约3个八度；（ii）在所有年龄，单眼视力随离心率增加而下降；（iii）2个月和3个月大的婴儿在30度时对颞侧视野光栅的视力高于鼻侧视野。本文讨论了这些结果对视觉发育问题的影响。
