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Vertical rectus muscle transposition improves abduction in abducens nerve palsy cases
Eur J Ophthalmol. 2011;21(3):223-227.
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Varying degrees of postoperative improvement were seen after vertical rectus muscle transposition to correct abducens nerve palsy, and the technique was shown to be successful and safe, according to a study.
All nine operations in the case series were performed by two surgeons. In eight cases, the temporal halves of the vertical rectus muscles were transposed. Additional procedures included resection of the lateral rectus, injection of botulinum toxin and Jensen's procedure.
The mean degree of preoperative abduction deficit was nearly -5.0; the mean degree of postoperative abduction deficit was -1.8.
The study results showed a significant reduction in the angle of strabismus for near and distance, improvement in binocular single vision and an increase in abduction. No significant postoperative complications or anterior segment ischemia were discovered in any of the cases.
"The main goal was not only to improve ocular alignment in the primary position but to reinforce the lost abduction as well," the study authors said.