Epileptic discharges triggered by eye convergence.

A 27-year-old man with major motor and minor seizures showed focal epileptic discharges and electrical seizures triggered by eye convergence. Other voluntary ocular movements failed to evoke reflex epileptic discharges. Eye convergence triggered discharges even after the eyelids were strapped open with tapes and the pupillary and accommodation reflexes were temporarily paralyzed. This patient also showed pattern-sensitive focal epileptic discharges arising from the same area of the brain as those induced by eye convergence, but he was not photosensitive.