© 2004 BMJ Publishing Group Ltd
SCIENTIFIC REPORT
Reduction of ocular muscle torque by splitting of the rectus muscle II: Technique and results
1 Krankenhaus der Barmherzigen Brüder Linz, Austria
2 Department of Neurology, University Hospital Zürich, Switzerland and Upper Austrian Research, Medical Informatics, Linz, Austria
Correspondence to:
Correspondence to:
Thomas Haslwanter PhD
Upper Austrian Research GmbH, Medical-Informatics, Softwarepark Hagenberg, Hauptstrasse 99, A-4232 Hagenberg, Austria; thomas.haslwanter{at}uar.at
Aim: To present the results of a new technique that the authors have developed to weaken the extraocular muscles. The biomechanics of this technique, which is termed "Y-split recession," are given in the companion paper.
Methods: A retrospective study, testing the effects of a new surgical technique on strabismus, nystagmus, and visual acuity. 228 patients (aged 6.8 (SD 6.0) years) with variable angle strabismus and nystagmus were treated by splitting and detaching two rectus muscles, and re-attaching the two halves at an angle of about 65° to each other. Subjects were examined with the usual orthoptic tests immediately after the operation, and up to 96 months later.
Results: The operation reduced the strabismus, eliminated or weakened the nystagmus in primary position, and improved binocular vision and the development of visual acuity. Only minor side effects were observed.
Conclusions: The Y-split recession can be used to reduce the torque for extraocular rectus muscles, and provides an alternative to "Cüppers Fadenoperation," recession, and similar procedures.
Keywords: strabismus; nystagmus; extraocular muscles; variable strabismus; surgery; children
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