Adjustment Sensitivity of Horizontal Rectus Muscles in Adjustable Strabismus Surgery

Aimslbackground-In the course of adjustable strabismus surgery there is only a limited period after surgery before the formation of firm adhesions prevents successful adjustment. To determine if this period could be increased by the interposition of suitable physical barriers, the use of Interceed and polyglactin 910 mesh was investigated in an aniimal model. Methods-A total of 39 rabbit eyes were divided into three groups. After recession of the superior rectus muscle (SRM), balanced salt solution was applied to the control group between the free muscle end and the sclera; in each of the two experimental groups, Interceed and polyglactin 910 mesh were applied. Delayed adjustment was performed once on each SRM at 1, 2, or 3 weeks postoperatively. The length and force of the adjustment, the degree of adhesions, and the degree of fibrous proliferation were recorded. Results-Adjustment was not possible in any of the eyes in the control group. At 1 week postoperatively, adjustment was possible in four out of five eyes with Interceed and in three out of five eyes with polyglactin 910 mesh as a physical barrier. Conclusions-Interceed may be clinically useful in delaying the timing of adjustment up to 1 week. Further study of the use ofother materials could be carried out to see if it was possible to delay the timing of adjustment for more than 1 week. (BrJ Ophthalmol 1996;80:759-762)

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Recovery of Extraocular Muscle Function After Adjustable Suture Strabismus Surgery Under Local Anesthesia

Dr¹,

Em²,

Mx³

1992

J Pediatr Ophthalmol Strabismus

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Limited data exist on the recovery of ocular motitity after adjustable suture strabismus surgery performed under local anesthesia. The timing of adjustment has been chosen empirically and has varied widely. We sought to more precisely quantify the recovery of motility by measuring auctions before and after surgery with a modified arc perimeter. Twenty-one eyes of 20 patients were studied. All patients underwent adjustable suture strabismus surgery under retrobulbar or peri buibar anesthesia using 2% lidocaine with hyaluronidase. Mean auctions orthogonal to the field of action of the operated muscle(s) returned to 90% of preoperative levels between 5 and 6 hours after injection. We recommend adjustment 6 or more hours after injection, or at least 5 to 6 hours postoperatively, when 2% lidocaine with hyaluronidase is used for local anesthesia.

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Adjustment Sensitivity of Horizontal Rectus Muscles in Adjustable Strabismus Surgery

Cited by 6 publications

References 3 publications

Strabismus Surgery Using the Intraoperative Adjustable Suture Method Under Anesthesia With Propofol

Strabismus Surgery Using the Intraoperative Adjustable Suture Method Under Anesthesia With Propofol

Use of physical barriers for delayed adjustable strabismus surgery: the effect of interceed and polyglactin 910 mesh.

Recovery of Extraocular Muscle Function After Adjustable Suture Strabismus Surgery Under Local Anesthesia

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