Success of surgical correction in constant and intermittent exotropias.
OBJECTIVE
To evaluate the success rate of surgical corrections of constant and intermittent exotropias.


METHODS
A case series.


METHODS
Al-Ibrahim Eye Hospital, Karachi, from July 2011 to December 2012.


METHODS
Patients having primary exotropia (deviation 15 - 45 prism diopters [PD]) were included. Patients with either constant exotropia or basic intermittent exotropia underwent unilateral surgery of lateral rectus recession (maximum up to 10 mm) and medial rectus resection (up to 6 mm). Similarly, when patients had intermittent distance exotropia, underwent bilateral lateral rectus recession (maximum up to 10 mm). Final outcome was considered at the end of 2 months at which achievement of ² 10 PD of exotropia was considered as a success.


RESULTS
Out of 248 patients, 170 (68.5%) had either constant exotropia or basic intermittent exotropia, while 78 (31.5%) had intermittent distance exotropia. Mean angle of deviation before surgery was 49.23 prism diopters while after surgery, mean angle of deviation was 8.54 prism diopters. Overall success rate was 81.45% (n=202). In case of unilateral lateral rectus recession and medial rectus resection surgery, the success rate was 85.14% while success rate in case of bilateral lateral rectus recession was 65.21% (p=0.001).


CONCLUSIONS
Unilateral lateral rectus recession and medial rectus resection for surgical correction of exotropia had better surgical success rate as compared to bilateral lateral rectus recession.
Department of Ophthalmology, Isra Postgraduate Institute of Ophthalmology, Al-Ibrahim Eye Hospital, Karachi.
Sadia
S
Bukhari
Department of Ophthalmology, Isra Postgraduate Institute of Ophthalmology, Al-Ibrahim Eye Hospital, Karachi.
Umair
U
Qidwai
Department of Ophthalmology, Isra Postgraduate Institute of Ophthalmology, Al-Ibrahim Eye Hospital, Karachi.
Ghulam Qadir
GQ
Kazi
D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D005099:Exotropia / Q000503:physiopathology / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007223:Infant; D008297:Male; D008875:Middle Aged; D009801:Oculomotor Muscles / Q000503:physiopathology / Q000601:surgery*; D013508:Ophthalmologic Surgical Procedures / Q000379:methods*; D012008:Recurrence; D016896:Treatment Outcome; D055815:Young Adult