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VOLUME 15 , ISSUE 2 ( May-August, 2021 ) > List of Articles

ORIGINAL RESEARCH

Ocular Perfusion Pressure and Severity of Glaucoma: Is There a Link?

TW Ch ng, CY Chua, MA Ummi Kalsom, Y Azhany, VHM Gong, AHG Rasool, AT Liza-Sharmini

Keywords : Blood pressure, Intraocular pressure, Ocular perfusion pressure, Severity of glaucoma

Citation Information : Ch ng T, Chua C, Kalsom MU, Azhany Y, Gong V, Rasool A, Liza-Sharmini A. Ocular Perfusion Pressure and Severity of Glaucoma: Is There a Link?. J Curr Glaucoma Pract 2021; 15 (2):78-85.

DOI: 10.5005/jp-journals-10078-1305

License: CC BY-NC 4.0

Published Online: 30-09-2021

Copyright Statement:  Copyright © 2021; The Author(s).


Abstract

Aim and objective: To establish the association between 12-month inter-visits ocular perfusion pressure (OPP) and severity of glaucoma. Materials and methods: A total of 164 eyes (60 primary open-angle glaucoma, 52 normal-tension glaucoma, and 52 primary angle-closure glaucoma) of 164 patients were analyzed in this prospective cohort study. Patients who demonstrated good compliance to treatment were recruited. The severity of glaucoma was stratified according to the Advanced Glaucoma Intervention Study (AGIS) score based on reliable and reproducible visual field analysis at baseline. OPP was obtained at baseline and a 3-monthly follow-up visit over a 12-month duration. The pattern and fluctuation of mean OPP were studied. Repetitive measure ANOVA and one-way ANOVA were used for statistical analysis. Results: The inter-visits mean OPP (p = 0.010), systolic OPP (p = 0.020), diastolic OPP (p = 0.010), systolic blood pressure (p = 0.040), and diastolic blood pressure (p = 0.006) showed significant difference with severity of glaucoma. There was no significant difference between mean inter-visits intraocular pressure (IOP) and severity of glaucoma (p = 0.410). The end-stage glaucoma group had the lowest mean OPP and widest inter-visit mean OPP fluctuation. Early and mild glaucoma patients demonstrated higher mean OPP compared with moderate, severe, and end-stage glaucoma. Conclusion: There is a significant association between OPP and the severity of glaucoma. Balancing blood pressure and IOP is important in optimizing adequate perfusion and prevent further damage to the optic nerve head.

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