Thirty years ago, our attention was drawn to the alphabetical incom- itances in strabismus. As an elevation in adduction is the most frequent incomitance, we decided to start treating these incomitances. A weak- ening procedure of the inferior oblique muscle seemed indicated. How- ever, since we wanted to prevent a torsional overcorrection with a head tilt, we displaced the scleral insertion of the oblique muscle towards the equator of the globe. This way, the torsional action of the muscles is saved. A weakening of the horizontal rectus muscles was systematically added, making it a...