Related Experiment Videos
Accuracy of suture adjustment in adjustable strabismus surgery evaluated at the initial postoperative examination
Satoshi Hasebe1, Chiaki Nakatsuka, Fumitaka Nonaka
1Department of Ophthalmology, Okayama University Medical School, Okayama, Japan.
Purpose:
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.
Conclusion:
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.