An ocular vasospasm induced by cold has been searched among 8 patients carrying primary vasospastic disease without any ocular pathology. Ocular vasospasm which is characterized by visual field defect was searched with Statpac 24-2 test using HUMPHREY autoperimeter. A baseline visual field was performed first, then a second after provocation by dipping the hand in cold water (13 degrees) and a third after oral administration of 10 mg of Nifedipine. Two patients had ocular vasospasm that regressed after Nifedipine administration. These two patients might have a higher risk to develop normal tension glaucoma.