Abstract
Purpose
This study aimed to evaluate changes in intraocular pressure following intravitreal dexamethasone implant injection, specifically in patients undergoing glaucoma filtration surgery.
Methods
The degree of increase in intraocular pressure was compared retrospectively among three groups. Group 1 comprised patients who underwent prior glaucoma filtration surgery (54 eyes). Group 2 included patients with or suspected glaucoma without such surgical history (20 eyes). Group 3 included patients without glaucoma (33 eyes). Pressure measurements were taken before the injection and at 1, 2, 3, and 6 months post-injection. A subgroup analysis was performed for pressure > 35 mmHg, > 30 mmHg, > 25 mmHg, and a difference > 10 mmHg between the peak and baseline pressure.
Results
Group 1 consistently displayed lower pressures compared with Group 2, with significant difference at both 1- and 6-month post-injections (15.09 mmHg vs. 18.10 mmHg, P = 0.042 and 13.91 mg vs. 17.25 mmHg, P = 0.040). The proportion of patients in Group 1 and Group 3 with pressures > 25 mmHg, > 30 mmHg, and a difference > 10 mmHg did not significantly differ (15.6% vs. 9.5%, P = 0.231; 3.1% vs. 2.3%, P = 0.867; and 17.1% vs. 7.1%, P = 0.231). Notably, Group 2 exhibited a significantly higher proportion within each category (> 25 mmHg, 24.0%; > 30 mmHg, 20.0%; > 10 mmHg difference, 28.0%).
Conclusion
Intravitreal dexamethasone implant did not increase the risk of elevated intraocular pressure in patients with a history of glaucoma filtration surgery compared with patients with suspected glaucoma; the risk was similar to those without glaucoma.
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Acknowledgements
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government. (MSIT) (RS-2023-00208518). The funding organization had no role in the design or conduct of this research.
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Christopher Seungkyu Lee contributed to the study conception and design. Material preparation, data collection and analysis were performed by Dong Kyu Lee, Se Joon Woo, Yong Sok Ji and Joo Yong Lee. The first draft of the manuscript was written by Dong Kyu Lee and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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This study was approved by the Institutional Review Board of Severance Hospital (approval number: 4–2022-0960) and adhered to the tenets of the Declaration of Helsinki.
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Lee, D.K., Lee, J.Y., Woo, S.J. et al. Changes in intraocular pressure following intravitreal dexamethasone implant in patients with history of glaucoma filtration surgery. Graefes Arch Clin Exp Ophthalmol (2024). https://doi.org/10.1007/s00417-024-06468-z
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DOI: https://doi.org/10.1007/s00417-024-06468-z