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Intraocular pressure changes at different gaze positions after superior rectus muscle-lateral rectus muscle loop myopexy in highly myopic strabismus

  • Clinical Investigation
  • Published:
Japanese Journal of Ophthalmology Aims and scope Submit manuscript

Abstract

Purpose

To evaluate changes in intraocular pressure (IOP) at different gaze positions before and after superior rectus muscle-lateral rectus muscle (SR-LR) loop myopexy in highly myopic strabismus (HMS).

Study design

Nonrandomized clinical, prospective, interventional trial.

Methods

Fourteen patients with HMS (18 eyes) who underwent SR-LR loop myopexy were divided into 3 groups: < 100 prism diopters (PD) (mild esotropia [ET] group), > 100 PD (large ET group), and > 100 PD, and simultaneous recession of the medial rectus (MR) muscle was performed (large ET + MR group). Intraocular pressure was measured preoperatively and postoperatively at the primary, abduction, and adduction positions in each group.

Results

Intraocular pressure did not change after surgery in the mild ET group. Intraocular pressure significantly decreased in the abduction position (from 20.0 ± 2.1 to 16.0 ± 1.9 mmHg, P = 0.043) in the large ET group and in the abduction (from 22.2 ± 5.9 to 15.6 ± 4.3 mmHg, P = 0.048) and primary positions (from 15.8 ± 5.0 to 10.2 ± 2.8 mmHg, P = 0.043) in the large ET + MR group. The preoperative significant differences in IOP between the abduction and adduction positions in the large ET group (7.4 ± 3.4 mmHg) and the large ET + MR group (10.0 ± 5.5 mmHg) disappeared postoperatively (3.2 ± 2.8 mmHg and 3.6 ± 1.7 mmHg, respectively). The differences in IOP between abduction and adduction were similar in all the groups.

Conclusion

SR-LR loop myopexy decreased IOP in patients with HMS in the abduction and primary positions.

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Data availability

The data that support the findings of this study are available upon request from the corresponding author (M.S.).

References

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Acknowledgments

We thank Editage for English language editing.

Funding

This study received funding from JSPS (kakenhi number: 16K11264).

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Authors and Affiliations

  1. Department of Ophthalmology, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka, 431-3125, Japan

    Shinji Arai, Hiroko Suzuki, Risako Inagaki, Takashi Haseoka, Akiko Hikoya, Miwa Komori, Tamami Shimizu, Yoshihiro Hotta & Miho Sato

  2. Department of Ophthalmology, Yamagata University Faculty of Medicine, Yamagata, Japan

    Shion Hayashi

  3. Laboratory for Visual Science, Department of Ophthalmology, National Center for Child Health and Development, Tokyo, Japan

    Shion Hayashi

Authors
  1. Shinji Arai
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  2. Hiroko Suzuki
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  3. Shion Hayashi
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  4. Risako Inagaki
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  5. Takashi Haseoka
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  6. Akiko Hikoya
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  7. Miwa Komori
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  8. Tamami Shimizu
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  9. Yoshihiro Hotta
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  10. Miho Sato
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Corresponding author

Correspondence to Miho Sato.

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Conflicts of interest

S. Arai, None; H. Suzuki, None; S. Hayashi, None; R. Inagaki, None; T. Haseoka, None; A. Hikoya, None; M. Komori, None; T. Shimizu, None; Y. Hotta, None; M. Sato, None.

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Corresponding Author: Miho Sato

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Arai, S., Suzuki, H., Hayashi, S. et al. Intraocular pressure changes at different gaze positions after superior rectus muscle-lateral rectus muscle loop myopexy in highly myopic strabismus. Jpn J Ophthalmol 68, 26–31 (2024). https://doi.org/10.1007/s10384-023-01032-4

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  • DOI: https://doi.org/10.1007/s10384-023-01032-4

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