Amblyopia therapy by the Campbell-Hess technique.

Campbell and Hess developed a new technique for treating amblyopia. This technique involves stimulation of the amblyopic eye for precise time intervals with a graded series of contrast frequency gratings. Partial occlusion is used only during the treatment. Treating strabismic and anisometropic amblyopes by the Campbell-Hess amblyopia training technique produced an improvement of two lines on the acuity chart in six of 14 patients.