THE STUDY AND CORRECTION OF HETEROPHORIA
THE STUDY AND CORRECTION OF HETEROPHORIA. HETEROPHORIA may be defined as that condition in which binocular vision, being temporarily suspended, the visual lines of the two eyes do not intersect at the point of fixation. It is characterized by a change in the innervation of the ocular muscles when the binocular fusion of images is prevented. Under normal conditions, binocular vision for a given point is, maintained by the co-ordinate action of the entire group of these muscles, and in the ideal eye, at least within certain limits, the innervation of these muscles is not a necessary function of the binocular act.