Simon F, Rassow B
Graefes Arch Clin Exp Ophthalmol. 1986;224(2):160-4. doi: 10.1007/BF02141491.
Retinal visual acuity was determined using an objective method by means of VEP. Sixty subjects with subjective visual acuity ranging from 20/25 to 20/12 were measured with a computer-controlled laser interferometer, using interference fringes modulated in counterphase as pattern-reversal stimulus. Steady-state VEPs taken at different spatial frequencies were evaluated by Fourier analysis and linear regression. Objective retinal acuity was calculated as the intersection between the linear regression line and the linear scaled spatial frequency axis. In 68% of all cases, the difference between objective and subjective visual acuity was less than +/- 5.1 cycles per degree (c/d) (+/- 15.4% referred to subjective acuity); in 86%, the difference was less than +/- 7.7 c/d (+/- 23.1%).
通过视觉诱发电位（VEP）采用客观方法测定视网膜视力。使用计算机控制的激光干涉仪对60名主观视力在20/25至20/12之间的受试者进行测量，使用反相调制的干涉条纹作为模式反转刺激。通过傅里叶分析和线性回归评估在不同空间频率下获得的稳态视觉诱发电位。将客观视网膜视力计算为线性回归线与线性缩放空间频率轴的交点。在所有病例的68%中，客观视力与主观视力之间的差异小于±5.1周/度（c/d）（相对于主观视力为±15.4%）；在86%的病例中，差异小于±7.7 c/d（±23.1%）。
