[Strabismus determined by anatomical changes in the extrinsic ocular muscles]

The anatomical primitive strabismus is prenatal and its characteristic is the loose in the elasticity of the muscles of the surrounding tissues. The cause is the deficit of embryogenesis, originating in the first two months of pregnancy. They are presented the clinical cases of anatomical strabismus, investigated and treated in the Ophthalmological Clinic during 10 years, the surgical techniques used and the postoperative functional and obstetrical results the ocular disturbances are intense and the debut is early. The surgery involves both eyes and the results depend on the clinical form, the restant ocular motility and the degree of fibrosis of the affected muscle.