[3 cases of vertical accommodative vergence].

Three cases of vertical accommodative vergence have been observed. One patient is described in detail. His right eye had become blind after a trauma. He showed a vertical vergence triggered by accommodation that had not been seen before his loss of sight. The strabismic eye deviated upwards during desaccommodation and downwards during accommodation. This unusual phenomenon could be due to a congenital supranuclear abnormality which became apparent only after the loss of binocular vision.