[The new surgery of functional esotropias (Faden operation and classical technics) (author's transl)].

This paper is the second part of a work devoted to the surgery of functional esotropias. The Authors bring a systematic study of fundamental motor impairments, and their particular management. Sucessively they consider the length, the alterations of contractible properties and the visco elastic changes of ocular muscles. Then they point out the partical means to reveal those troubles by clinical examination, electro-oculography, study of eye position during anesthesia and muscular traction test. They underline the advantages, limits and drawbacks of Fadenoperation. Theorically and practically, a too posterior scleral fastening is dangerous. To avoid some complications of Cupper's original technic, they use a personal procedure: the muscle slapping, which seems to give good results. Finally, they analyze central disorders. The electrooculographic recordings prove that motor troubles are certainly related with primitive visual impairments. They note that the frequent surgical cure means the muscle operations have a binding effect of proprioceptive nature on the central motor disorders.