Table 4

Correlation between interocular differences in the parameters Vmax, n, and K of the two models of the Naka-Rushton equation with interocular differences in mean deviation

Parameters of the two models of the Naka-Rushton equationPearson correlation of interocular differences with interocular differences in mean deviation
Correlation coefficientp Value
Vmax1 –0.320NS
n1 –0.318NS
K1 0.043NS
Vmax2 –0.4890.003**
n2 –0.133NS
K2 –0.296NS
  • Vmax = maximum amplitude of the b-wave for assumed infinite flash intensities; K = light intensity where b-wave amplitude reaches half saturation; n = a dimensionless constant related to the slope of the intensity response function.

  • Of parameters Vmax, n, and K of the two models of the Naka-Rushton equation used in this study (model 1: fit of the function to all data points, model 2: fit of the function to all data points below –1.25 log units (0.53 cd s/m2), only the interocular differences in Vmax2 of the second model correlated significantly with the interocular differences in mean deviation.