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Clinical factors affecting intraocular pressure change after orbital decompression surgery in thyroid-associated ophthalmopathy

Authors Jeong JH, Lee JK, Lee D, Chun Y, Cho BY

Received 5 October 2015

Accepted for publication 14 December 2015

Published 18 January 2016 Volume 2016:10 Pages 145—150


Checked for plagiarism Yes

Review by Single anonymous peer review

Peer reviewer comments 2

Editor who approved publication: Dr Scott Fraser

Jae Hoon Jeong,1 Jeong Kyu Lee,1,2 Dong Ik Lee,1 Yeoun Sook Chun,1 Bo Youn Cho2

1Department of Ophthalmology, College of Medicine, Chung-Ang University 2Thyroid Center, Chung-Ang University Hospital, Seoul, Korea

Objective: To report the physiological monitoring of intraocular pressure (IOP) during the postoperative periods after orbital decompression surgery and ascertain the correlation between the clinical factors and IOP changes.
Methods: The medical records of 113 orbits from 60 patients who underwent orbital decompression surgery were reviewed retrospectively. IOP measurement during the postoperative periods was classified based on the postoperative day: week 1 (1–7 days), month 1 (8–41 days), month 2 (42–70 days), month 3 (71–97 days), month 4 (98–126 days), and final (after 127 days). The mean postoperative follow-up was 286.5 days for orbits with at least 6 months of follow-up. Univariate and multivariate linear regression analyses were performed to assess the correlation between the IOP reduction percentage and clinical factors.
Results: The mean IOP increased from 16.9 to 18.6 mmHg (10.1%) at postoperative week 1 and decreased to 14.4 mmHg (14.5%) after 2 months. Minimal little changes were observed postoperatively in the IOP after 2 months. Preoperative IOP had a significant positive effect on the reduction percentage both at postoperative week 1 (β=2.51, P=0.001) and after 2 months (β=1.07, P=0.029), and the spherical equivalent showed a positive correlation with the reduction level at postoperative week 1 (β=1.71, P=0.021).
Conclusion: Surgical decompression caused a significant reduction in the IOP in thyroid-associated orbitopathy, and the amount of reduction was closely related to preoperative IOP; however, it may also cause a transient elevation in the IOP during the early postoperative phase in highly myopic eyes.

Keywords: Graves’ ophthalmopathy, intraocular pressure, myopia, physiologic monitoring, postoperative periods, surgical decompression

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