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The Effect of Atmospheric Pressure on Intra-ocular Pressure Variation
1Koulas C., 2Brauel D., 1Müller M. F., 1Köller U. A., 1Böhm A. G., 1Pillunat L. E.,
1Universitätsklinikum Carl Gustav Carus, Klinik und Poliklinik für Augenheilkunde (Dresden)
2Praxis (Cuxhaven)
Purpose: Clinical observations have shown that intraocular pressure (IOP) may vary in patients with glaucoma or ocular hypertension (OHT) depending on the atmospheric pressure (AP). The aim of the present study is to evaluate the influence of various atmospheric pressures on IOP.
Material and methods: In a prospective, clinical study measurements of IOP, AP, blood pressure (BP) and heart rate (HR) were performed on 225 patients (group I: 77 male and 148 female, mean age 65 years) with glaucoma or OHT. 115 these patients (group II: 41 male, 72 female, mean age 65 years) underwent follow measurements at three different time intervalls.
Results: The correlation between IOP and AP in group I was r=-0,03, between AP and systolic BP r=0,026, between AP and diastolic BP r=-0,00736 and between AP and HR r=0,0513. In group II no significant correletion between the IOP (r=0,29), systolic and diastolic BP (r=0,19) or HR ( r=0,21) and the atmospheric pressure were found (r=< 0,3).
Conclusions: The results of this study show that alterations of IOP do not depend on the atmospheric pressure changes. Furthermore systemic parameters are not influenced by changes in atmospheric pressure.