Tschopp C, Safran A B, Viviani P, Reicherts M, Bullinger A, Mermoud C
Neuro-ophthalmology Unit, Geneva University Hospital, Switzerland.
Vision Res. 1998 Jul;38(14):2211-8. doi: 10.1016/s0042-6989(97)00369-6.
We determined normative values for the visual sensitivity threshold in 118 children aged 5-8 years, using automated static perimetry (Octopus 2000R, program 32). In addition, 17 normal adults were tested. The children first underwent a familiarization procedure. One week later, quantitative examination was performed according to a specially designed schedule divided into three phases. For each of the 76 points tested, mean thresholds and standard deviations were calculated as a function of age. In contrast to previous studies, sensitivity difference between adults and children over the central 30 degrees of the visual field emerged only for the youngest age groups (5- and 6-year olds). Both the response rate in false-negative trials, and values of a within-subject threshold variability index, suggested that 5- and 6-year-olds' higher thresholds were inflated by non physiological factors, such as vigilance and cognitive processes. For these ages, the data reported here should therefore be considered as an approximation of the upper level of the thresholds. In contrast, our results for 7- and 8 year-old children provided reliable normative values for light sensitivity across the visual field.
我们使用自动静态视野计（Octopus 2000R，程序32）测定了118名5至8岁儿童的视觉敏感度阈值的标准值。此外，还对17名正常成年人进行了测试。儿童首先要经历一个熟悉过程。一周后，根据专门设计的分为三个阶段的时间表进行定量检查。对于所测试的76个点中的每一个，均根据年龄计算出平均阈值和标准差。与之前的研究不同，仅在最年幼的年龄组（5岁和6岁儿童）中，成年人与儿童在视野中央30度范围内的敏感度差异才显现出来。假阴性试验中的反应率以及受试者内阈值变异性指数的值均表明，5岁和6岁儿童较高的阈值受到非生理因素（如警觉性和认知过程）的影响而被夸大。因此，对于这些年龄段，此处报告的数据应被视为阈值上限的近似值。相比之下，我们对7岁和8岁儿童的研究结果为整个视野的光敏感度提供了可靠的标准值。
