Increment threshold spectral sensitivity in anisometropic amblyopia

Abstract

Increment threshold spectral sensitivity curves were determined for amblyopic and non-amblyopic eyes with four adapting field intensity levels. The sensitivity of the amblyopic eye compared to the non-amblyopic eye was lower across the entire visible spectrum and did not show the dip in the yellow region of the spectrum that was characteristic of the non-amblyopic eye. The differences in the shapes of the functions between the two eyes can be accounted for by anomalous lateral inhibition between the red and green cones in the retina of the amblyopic eye.