Eye muscle potentiation does not account for adaptation in distance perception based on oculomotor cues

Ebenholtz and Wolfson have demonstrated an aftereffect of sustained ocular convergence, which they ascribed to eye muscle potentiation. They suggested that this effect can explain an aftereffect of wearing glasses that alter oculomotor cues for distance. Wallach and Frey interpreted this aftereffect as resulting from adaptation. The outcome of two experiments designed to test Ebenholtz and Wolfson’s explanation and a review of previous experiments on adaptation in distance perception based on oculomotor cues show that this explanation is untenable.