Sagittalization of the oblique muscles as a possible cause for the "A", "V", and "X" phenomena.

Abstract

IN order to reduce the incomitance of the "V" phenomenon we carry out an anteroposition of the inferior oblique muscle (Gobin, 1964). This means that the scleral insertion of the muscle is displaced towards the equator, thus enlarging the angle between the muscle and the visual axis. This operation changes the relationship between the torsional and vertical components of the muscle, favouring the torsional action. Our good results suggest that an abnormal relationship between those two components may be an obstacle to binocular vision.