The critical period for susceptibility of human stereopsis
The critical period for susceptibility of human stereopsis
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DOI：
10.1167/iovs.04-0175
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发表时间：
2005-02-01
影响因子：
4.4
通讯作者：
Birch, EE
中科院分区：
文献类型：
--
作者：
Fawcett, SL;Wang, YZ;Birch, EE
目的.目的：确定人的立体视觉对异常双眼视觉的敏感性的临界期。本文对152名5岁以前有婴儿性斜视或斜视病史的儿童进行了随机点立体视锐度测定。在这些人群中的每一个和合并的人口，立体视觉的敏感性的关键时期描述使用四参数发育加权函数。在婴儿斜视儿童中，立体视敏感性的临界期开始于2.4个月，在4.3个月达到高峰。在混合性内斜视儿童中，立体视敏感性的临界期开始于10.8个月，峰值在20个月。当两个人群的数据相结合时，关键期开始于出生后不久，并在3.5个月时达到峰值，但显示出至少4.6年的持续易感性。在婴儿早期的异常双眼视觉经验严重破坏立体视觉，但立体视觉的敏感性的关键时期延伸到婴儿后期和幼儿期，并持续到至少4.6岁。
PURPOSE. To define the critical period for susceptibility of human stereopsis to an anomalous binocular visual experience.METHODS. Random dot stereoacuity was measured in 152 children with a history of onset of either infantile or accommodative strabismus before 5 years of age. In each of these populations and in the combined population, the critical periods for susceptibility of stereopsis are described using four-parameter developmental weighting functions.RESULTS. In children with infantile strabismus, the critical period for susceptibility of stereopsis begins at 2.4 months and peaks at 4.3 months. In children with accommodative esotropia, the critical period for susceptibility of stereopsis begins at 10.8 months and peaks at 20 months. When the data are combined across the two populations, the critical period begins soon after birth and peaks sharply at 3.5 months but shows continued susceptibility to at least 4.6 years.CONCLUSIONS. An anomalous binocular visual experience during early infancy severely disrupts stereopsis, yet the critical period for susceptibility of stereopsis extends through late infancy and early childhood and continues to at least 4.6 years of age.