The authors studied 18 cases of infantile epilepsy with occipital focus and good prognosis. The patients were selected according to clinical and EEG criteria. Those criteria are: neurological and neuroradiological examinations must not show any abnormality; the patients must be free from seizures for at least 3 years and 6 months; the fundamental EEG activities must be normal, and a spike and/or spike and wave occipital focus has to be present. The medical story, the clinical and EEG follow-up, the seizures semiology (clinical and EEG) during the awake and sleep stages are described. The data show a new primary benign epileptic entity which is probably associated to maturation disturbances.