Abstract:

Extraocular muscles and orbital fascia tissue cooperate in ocular motility. Previous studies have mainly focused on the pathological changes of extraocular muscle fibers, rarely on the role of orbital fascia tissue in ocular motility. Pulleys is a resilient structure located near the orbital wall and connected to the equator of the eyeball, the rectus muscle reaches its sclera attachment through the structure. Pulleys controls the extraocular muscle (EOM) path and serves as the EOM's functional origin. Orbital fascia tissue plays more active role in ocular motility. Age-related degenerative changes of Pulleys can occur and abnormal Pulleys is related with the ocular motility disorders, which should be fully taken into account by the surgeons in the diagnosis and treatment of strabismus.