Clinical characteristics and surgery of restricted strabismus

Objective: To investigate the clinical features and surgical treatment of restricted strabismus. Methods: 24 cases (28 eyes) of constant strabismus following retina surgery and 7 cases (9 eyes) of restricted strabismus complicated by thyroid-related immune orbitopathy (TRIO) were examined under prism alternative cover test or Krimsky test,eyeball movement and diplopia analyses before and after strabismus operation.The effects of the operation on the restricted strabismus were also observed. Results: The main feature of restricted strabismus was that the direction of strabismus corresponded with the extraocular muscles restricted,and opposed to the most position in diplopia and restricted binocular motility.Strabotomy could completely or partly eliminate diplopia,especially could correct the restricted strabismus in primary position and in read location. Conclusions: The clinical characteristics of restricted strabismus are helpful for the accurate judgment on the orientation of restricted muscles,and helpful for the strabismus operation.Strabotomy is effective in the treatment of restrictive strabismus.