Extraocular muscle recession with a suture loop in dogs.

Extraocular muscle recessions with loops of silk suture were performed in 10 dogs. When, after a 5-mm section of the medial rectus muscle was resected, suture loops 5 mm long were inserted near the functional equator (8 mm behind the muscle's original insertion) an effective pseudotendon was produced in 71% of the eyes. This procedure may be a useful addition to the surgical methods of correcting horizontal strabismus.