Abstract
Eye deviation with eyes closed and open in total darkness was followed up after labyrinthectomy in order to elucidate the process of compensation of eye deviation after unilateral labyrinth loss. The results were as follows:
1) The degree of eye deviation decreased to the 90% tolerance limits of normal subjects in about one month, with a close correlation between eye deviation with eyes closed and that with eyes open in total darkness.
2) The direction of eye deviation with both eyes closed and open in total darkness was consistently to the affected side, except for cases of minute eye deviation, and the process of compensation of eye deviation did not show repeated compensation and over-compensation, in contrast to that of vestibular spinal reflexes.
3) The pattern of eye deviation stabilized from an unstable pattern, i. e. types II and III to a stable pattern, and type I with a decrease in eye deviation.
4) The process of compensation of eye deviation did not coincide with that of nystagmus.
