The physiological background to amblyopia treatment by rotating gratings.

This paper contains a brief description of the new treatment for functional amblyopia introduced by Banks et al. (1978). The ways in which this treatment might stimulate the cells of the visual cortex by means of a high-contrast grating, of continuously changing orientation and selective spatial frequency, are discussed in terms of the normal visual system. Published studies of the effectiveness of the technique in improving vision are reviewed.