Accommodation in infants as measured by photorefraction.
Accommodation in infants as measured by photorefraction.
复制标题
通过光折射测量婴儿的适应性。
DOI：
10.1016/0042-6989(87)90128-3
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发表时间：
1987
期刊：
影响因子：
1.8
通讯作者：
Sayles,N
中科院分区：
文献类型：
--
作者：
Howland,HC;Dobson,V;Sayles,N
我们开发了一种摄像机光折变程序，可以在 1-2 m 的距离内在线监测住宿情况，并用它来研究 29 名 2 至 10 个月大的人类婴儿的住宿情况。我们在距婴儿 25、33、50 和 100 厘米处展示了方波光栅和随机棋盘目标。所有婴儿都改变了他们的适应方向以改变目标距离。我们还向婴儿展示了一个缓慢旋转的圆形条纹目标。我们没有观察到散光婴儿对旋转条纹目标的调节有任何系统性变化，也没有观察到他们对固定目标的调节作为目标类型的函数有任何显着变化。测得的婴儿调节速度至少为 4.6 D/秒，与成人的调节速度相当。
We developed a video camera photorefractive procedure that allows on-line monitoring of accommodation from a distance of 1–2 m, and have used it to study accommodation in twenty-nine 2- to 10-month-old human infants. We presented square wave gratings and random chekerboard targets at 25, 33, 50, and 100cm from the infant. All infants altered their accommodation in the appropriate direction for changing target distances. We also presented infants with a slowly rotating circular striped target. We did not observe any systematic change in accommodation of the astigmatic infants to the rotating striped target, nor any significant change in their accommodation to stationary targets as a function of target type. Measured speeds of accommodation in infants were at least 4.6 D/sec, comparable to that found for adults.