[Accuracy of suture adjustment in sliding noose type adjustable strabismus surgery].
OBJECTIVE
To clarify the efficacy of adjustable suture strabismus surgery with sliding noose, we evaluated the accuracy of suture adjustment.


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 an additional resection or a muscle transposition) was performed with an adjustable suture(Guyton's procedure), and the suture was adjusted 6-24 hours after the surgery. Based on the initial postoperative examination performed 1-4 weeks(mean: 2.8 weeks) after the surgery, errors in the far deviation from the individual target were analyzed.


RESULTS
Twenty-six(76%) patients required suture adjustment 1-8 times. In 50% and 75% of our patients, the errors were within +/- 0.8 and +/- 2.0 PD, respectively, whereas 2(6%) patients with esotropia showed an undercorrection larger than 10 PD. Distribution of the errors was the same throughout the range of pre-operative deviation.


CONCLUSIONS
By using the sliding noose type adjustable suture, a pin-point alignment of the eyes can be established in more than 50% of cases, at least, in the early post-operative period.
Hasebe
Satoshi
S
Department of Ophthalmology, Okayama University Medical School, 2-5-1 Shikata-cho, Okayama 700-8558, Japan.
Yamane
Takashi
T
Fujiwara
Hiroyuki
H
Nonaka
Fumitaka
F
Nakatsuka
Chiaki
C
Ohtsuki
Hiroshi
H
D000293:Adolescent; D000328:Adult; D000368:Aged; D005133:Eye Movements; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D013285:Strabismus / Q000503:physiopathology / Q000601:surgery*; D013536:Suture Techniques; D016896:Treatment Outcome; D015348:Vision, Binocular