Abstract
Purpose
The aim of this study was to report our postoperative results concerning the vertical rectus (VR) muscle union combined with lateral rectus (LR) plication for the treatment of large-angle esotropia (ET) in complete abducens nerve palsy.
Methods
Medical records from 36 patients who had undergone the VR union procedure for ET treatment due to sixth-nerve palsy between July 2014 and July 2018 at Beyoglu Eye Research and Training Hospital were reviewed. One week before surgery, all patients underwent a 4-IU botulinum toxin A (btx) injection into the ipsilateral medial rectus (MR). All patients then underwent a VR muscle union procedure. A non-absorbable suture was inserted through the lateral muscular margin of each VR muscle at approximately 1/5 the width from the edge at 10 mm distance from the VR insertion. Both sutures were then tied to each other above the LR. Plication of the LR muscle using a non-absorbable suture was performed in all cases.
Results
The study population consisted of 14 (38.9%) females and 22 (61.1%) males. The mean age was 36.31 ± 19.16 years. The mean preoperative deviation angle in primary gaze into distance was 47.77 ± 18.48 prism diopter (PD). The mean deviation angle 1 year after surgery was − 1.0 ± 6.62 PD. Abduction improved from − 4.27 ± 0.46 to − 1.88 ± 0.96.
Conclusion
The VR muscle union in combination with LR plication appears to be an effective treatment procedure for complete abducens nerve palsy patients.
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Inal, A., Gokyigit, B., Ocak, O.B. et al. Vertical rectus muscle union combined with lateral rectus plication for complete abducens nerve palsy. Int Ophthalmol 40, 423–429 (2020). https://doi.org/10.1007/s10792-019-01200-x
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DOI: https://doi.org/10.1007/s10792-019-01200-x