Accuracy of suture adjustment in adjustable strabismus surgery evaluated at the initial postoperative examination.
OBJECTIVE
To clarify the efficacy of sliding-noose type adjustable suture strabismus surgery, we evaluated the accuracy of suture adjustment based on data from the initial postoperative examination performed 1-4 weeks after the surgery.


METHODS
Thirty-four patients with various types of strabismus participated [age range, 12-79 years; range of far deviation, 4-123 prism diopters (PD)]. Under sub-Tenon anesthesia, a recession (with or without a resection or muscle transposition) was performed with an adjustable suture (Guyton's procedure), and the suture was adjusted 6-24 hours after surgery.


RESULTS
Twenty-six (76%) patients required suture adjustment one to eight times. In 50% and 75% of our patients, the errors from individual target angle were within +/- 0.8 and +/- 2.0 PD, respectively, whereas 2 (6%) patients with esotropia showed an undercorrection larger than 10 PD. The error distribution was almost the same throughout the range of preoperative deviation.


CONCLUSIONS
By using an adjustable suture with a sliding noose, pinpoint alignment of the eyes can be achieved in more than half of the cases, at least in the early postoperative period.
Hasebe
Satoshi
S
Department of Ophthalmology, Okayama University Medical School, Okayama, Japan.
Nakatsuka
Chiaki
C
Nonaka
Fumitaka
F
Fujiwara
Hiroyuki
H
Ohtsuki
Hiroshi
H
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D005133:Eye Movements; D006801:Humans; D008875:Middle Aged; D009801:Oculomotor Muscles / Q000601:surgery*; D013508:Ophthalmologic Surgical Procedures; D011182:Postoperative Care; D015203:Reproducibility of Results; D013285:Strabismus / Q000601:surgery*; D013536:Suture Techniques