Tyler C W, Apkarian P, Levi D M, Nakayama K
Invest Ophthalmol Vis Sci. 1979 Jul;18(7):703-13.
We have developed an electronic spatial frequency sweep technique for electrophysiological assessment of visual acuity and pattern vision. The technique allows an accurate and reliable measurement of VEPs to a full range of spatial frequencies in just 10 sec. Because the measurements are so rapid, the technique suggests several new improvements in the assessment of visual function. Sweeping spatial frequency linearly and extrapolating the high-frequency region of the VEP spatial-tuning function to zero voltage allows an estimate of acuity which correlates highly with psychophysical estimates of acuity. Variants of the procedure are appropriate for the assessment of refracture error, determination of equality of visual function for the two eyes and of binocular interactions, and for sequential assessment of therapeutic conditions.
我们开发了一种用于视力和模式视觉电生理评估的电子空间频率扫描技术。该技术能够在短短10秒内对全范围的空间频率准确可靠地测量视觉诱发电位（VEP）。由于测量速度非常快，该技术为视觉功能评估带来了多项新的改进。线性扫描空间频率并将VEP空间调谐函数的高频区域外推至零电压，可以估算出与视力的心理物理学估计高度相关的视力。该程序的变体适用于屈光不正的评估、双眼视觉功能平等性及双眼相互作用的测定，以及治疗情况的连续评估。
