Muscle belly union for treatment of myopic strabismus fixus.
OBJECTIVE
To evaluate the surgical results of the medial rectus (MR) muscle recession associated with longitudinal splitting of the lateral rectus (LR) and superior rectus (SR) muscles and surgical union of their corresponding midpoints in highly myopic patients with severe esotropia and hypotropia and restricted abduction and elevation.


METHODS
Six cases of severe high myopic strabismus fixus were considered with more than 90Delta esotropia and 25Delta to 30Delta hypotropia. The nasally deviated SR muscle and inferiorly shifted LR muscle were confirmed by MRI or CT scan. Supratemporal herniation of the globe from the muscle cone was also found by imaging. The LR and SR muscles were split in half from the insertion to past the equator. The lateral half of the SR muscle was united to the superior half of the LR muscle. Medial rectus muscle was recessed also.


RESULTS
Motility gradually improved and by 8 weeks in four cases there was 5Delta to 15Delta residual esotropia and no hypotropia and mild limitation in abduction and elevation. In two cases due to marked residual esotropia, we performed a second operation, and 2 months later residual esotropia was mild.


CONCLUSIONS
In highly myopic patients, if the deviant paths of the LR and SR muscles are demonstrated by MRI or CT scan, the surgical method described is effective and recommended.
Ahadzadeghan
Iraj
I
Department of Ophthalmology, School of Medicine, Medical Sciences/Tehran University, Tehran, Iran.
Akbari
Mohammad Reza
MR
Ameri
Ahmad
A
Anvari
Faramarz
F
Jafari
Aliraza K
AK
Rajabi
Mohamad Taher
MT
D000368:Aged; D004948:Esotropia / Q000175:diagnosis / Q000209:etiology* / Q000503:physiopathology / Q000601:surgery*; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009216:Myopia / Q000150:complications*; D009801:Oculomotor Muscles / Q000473:pathology / Q000601:surgery*; D013508:Ophthalmologic Surgical Procedures / Q000379:methods* / Q000592:standards; D012720:Severity of Illness Index; D016896:Treatment Outcome; D055815:Young Adult