Evoked potential estimates of visual accommodation in infants.
Evoked potential estimates of visual accommodation in infants.
复制标题
诱发婴儿视觉调节的潜在估计。
DOI：
10.1016/0042-6989(83)90052-4
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发表时间：
1983
期刊：
影响因子：
1.8
通讯作者：
Paul,A
中科院分区：
文献类型：
--
作者：
Sokol,S;Moskowitz,A;Paul,A
记录2至5月龄婴儿的图形翻转视觉诱发电位（VEP），以测量其在9屈光度范围（10-150 cm）内的视觉表现。通过在婴儿眼前放置屈光度逐渐增加的负球面透镜，并改变婴儿与刺激物的距离，来刺激调节。视觉诱发电位潜伏期的测量表明，婴儿的能力，以保持一个区域的清晰的视觉变化与年龄和图案元素的大小。对于较大的检查（60分钟弧），大多数2至4个月大的婴儿能够在9屈光度范围内保持清晰的视力。当使用小检查（15分钟弧）时，大多数4- 5个月大的婴儿无法通过VEP测量来适应超过5-6屈光度。婴儿的清晰视力区随着检查尺寸的减小而下降主要是由于婴儿眼睛的相对大的焦深和差的视觉分辨率。在一小群婴儿中，调节进行了评估，电生理的VEP记录和行为使用优先寻找技术。结果表明，更好的住宿VEP估计比行为措施。
Pattern reversal visually evoked potentials (VEPs) were recorded from infants between 2 and 5 months of age in order to measure their accommodative performance over a 9 diopter range (10–150 cm). Accommodation was stimulated by placing minus spherical lenses of increasing power in front of the infant's eyes and by changing the infant's distance from the stimulus. VEP latency measurements indicated that the infant's ability to maintain a zone of clear vision changes with age and pattern element size. For large checks (60 min arc), most 2- to 4-month old infants were able to maintain clear vision over the range of 9 diopters. When small checks (15 min arc) were used, the majority of 4- to 5-month old infants were unable by VEP measures to accommodate beyond 5–6 diopters. This decline in the infant's zone of clear vision with decreasing check size is due primarily to the relatively large depth of focus and poor visual resolution of the infant eye. In a small group of infants, accommodation was assessed both electrophysiologically by VEP recording and behaviorally using a preferential looking technique. Results indicated better accommodation by VEP estimates than by behavioral measures.