Dobson V, Teller D Y, Lee C P, Wade B
Invest Ophthalmol Vis Sci. 1978 Dec;17(12):1142-50.
A technique for rapid behavioral screening of grating acuity in infants 1 to 4 months of age is described. The approach, called forced-choice preferential looking (FPL), depends upon the fact that normal infants will stare fixedly at acuity gratings with stripe widths above a rather abrupt cutoff width. The present task is to find the minimum stripe width, termed the diagnostic stripe width, to which infants with normal visual acuity will readily respond. The expectation is that infants with below-normal acuity will not be able to respond to diagnostic stripes so defined. To assess the feasibility of such a test procedure and define preliminary diagnostic stripe widths for infants 4, 8, 12, and 16 weeks of age, 76 presumptively normal infants were tested in the laboratory with a 40-trial FPL procedure. Sixty-nine infants (91%) completed the test procedure. For each age group, a preliminary estimate of the diagnostic stripe width was found. The group performance was uniformly high for the stripe widths designated as diagnostic and fell off sharply for finer stripes, confirming the feasibility of the approach.
本文描述了一种针对1至4个月大婴儿进行光栅视力快速行为筛查的技术。这种方法称为强制选择优先注视（FPL），其依据是正常婴儿会目不转睛地盯着条纹宽度高于某个相当突然的截止宽度的视力光栅。当前的任务是找出正常视力婴儿能够轻易做出反应的最小条纹宽度，即诊断条纹宽度。预期是视力低于正常水平的婴儿将无法对如此定义的诊断条纹做出反应。为评估这种测试程序的可行性，并确定4周、8周、12周和16周龄婴儿的初步诊断条纹宽度，在实验室中对76名推测为正常的婴儿采用40次试验的FPL程序进行了测试。69名婴儿（91%）完成了测试程序。对于每个年龄组，都得出了诊断条纹宽度的初步估计值。对于指定为诊断用的条纹宽度，各组的表现都一致很高，而对于更细的条纹，表现则急剧下降，这证实了该方法的可行性。
