[The use of oblique recession of the horizontal recti muscles in surgery of A and V syndromes (author's transl)].

Without dwelling on the aetio-pathogenesis, which is not known, the author reviews the usual signs and symptoms of A and V syndromes, and outlines the limited conditions in which purely horizontal muscle surgery is justified. Preference is given to oblique recessions over the technique of raising or lowering the muscle insertions. This is not because of better results in correcting the alphabetic syndrome itself, but for two advantages of the former method. These are firstly it being more respectful anatomically, and secondly the torsion induced by the syndrome is corrected rather than aggravated.