Opening of the symposium.- One: Binocular Vision and Concomitant Squint.- Physiological fixation disparity.- Fixation disparity and the interaction of foveal and non-foveal fusion.- Fixation disparity in vertical vergence movements.- Vertical fixation disparity and stereopsis.- 461 Curves of horizontal prism fixation disparity in an orthoptic department.- Anomalous fusion.- Sensorial interactions in reeducated strabismic amblyopia.- Binocularity in comitant esotropia and exotropia.- Results of the fadenoperation in alternating convergent strabismus of the congenital type.- Possibility of correct fusion formation of adults.- Early onset esotropia.- A new hypothesis on latent nystagmus and on the congenital squint syndrome.- Strabismus in cerebral palsy.- Comparative study of the anaesthesia test in normal and strabismic children.- Unilateral traumatic aphakia.- Motor tonus adaptation in squint.- The subjective angle as a basis for the surgery of the anatomical deviation.- Influence of progressive presson-prisms on changing squinting angles.- Binocular vision in treated squints.- Causes and treatment of consecutive exotropia.- Posterior fixation surgery in paretic strabismus indications and technic.- Results of Cüppers Fadenoperation (posterior fixation suture).- Two: Non-Comitant Squint.- Basic motor mechanisms in paretic squint.- Primary overacting inferior oblique muscle.- Electrooculographic examinations in comitant and incomitant strabismus.- Electrophysiological diagnosis in non-comitant strabismus.- The Bielschowsky head tilt test and ocular counter-rolling.- L’electro-oculographie des paralysies oculo-motrices horizontales interet physio-pathologique, diagnostique et therapeutique.- The treatment of non-comitant strabismus.- Use of adjustable suture technique in surgical management of noncomitant squint.- Duane’s retraction syndrome: Diagnosis and therapeutic considerations in 150 cases.- La chirurgie du grand oblique.- Considerations on the surgical management of isolated oculo-motor palsies.- Surgical symmetrization of kinetical incomitances.- Retro-equatorial myopexy of the vertical recti in traumatic diplopia.- L’arrachement et 1a migration anterieure du fil dans la Fadenoperation de Cüppers.- Oculomotor imbalance in congenital ptosis.- Die Bedeutung der Vertikalablenkung bei der horizontalen Blicklähmung.- Prenuclear slowly progressive bilateral abducens palsy in Marie’s cerebellar ataxia.- Absence or hypoplasia of extraocular eye muscles.- Posterior fixation suture in noncomitant squint. Round Table Discussion.