Strabismus surgery in ocular myasthenia gravis.
We evaluated the efficacy of eye muscle surgery in 4 patients with ocular myasthenia gravis with troublesome diplopia. All patients were in remission and had shown a consistently stable angle of deviation for at least 6 months preoperatively. The extent of eye muscle surgery was based on the degree of deviation in the primary position, and conventional recession and resection procedures were performed in 3 patients and hang-loose recession with an adjustable recession in 1. Single binocular vision was obtained in 3 patients in the primary position without prism correction or compensatory head posture. Electron-microscopic studies on the eye muscle specimens obtained at strabismus surgery revealed non-specific degenerative findings for the muscle fibers and sarcomeric disorganization compared to that in a control extraocular muscle.
Ohtsuki
H
H
Department of Ophthalmology, Okayama University Medical School, Okayama, Japan.
Hasebe
S
S
Okano
M
M
Furuse
T
T
D000293:Adolescent; D005133:Eye Movements; D005260:Female; D006801:Humans; D008875:Middle Aged; D009157:Myasthenia Gravis / Q000150:complications* / Q000503:physiopathology / Q000601:surgery; D009801:Oculomotor Muscles / Q000601:surgery / Q000648:ultrastructure; D013285:Strabismus / Q000209:etiology / Q000503:physiopathology / Q000601:surgery*; D015348:Vision, Binocular