Abstract
In patients suffering from unilateral disequilibrium with the features of the sensorimotor induction syndrome, a characteristic change of the visual field is found. This change manifests itself by a concentric constriction of the visual field, the temporal part being more affected, and is usually found in the eye corresponding with the side of the disequilibrium. This change of the visual field becomes apparent either on successive tests or is present from the start and increases on repeated examination. The change of the visual field can be distinctly influenced by colors, red aggravating and accelerating and concentric constriction, and blue causing its retrogradation. The dynamic change of the visual field described above belongs to the secondary disturbances of perception which occur in spite of integrity of the sensory organs concerned, and which are subject to the physiopathological basic rules of sensorimotor induction in unilateral disequilibrium.

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