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Ocular pulse amplitude and local carbonic anhydrase inhibition


, : Ocular pulse amplitude and local carbonic anhydrase inhibition. Der Ophthalmologe 94(9): 659-664

Ocular perfusion is increasingly being discussed in the pathogenesis of glaucoma. The present study was designed to investigate ocular pulse amplitude (OPA) in primary open-angle glaucoma (POAG) patients with elevated intraocular pressure (HTG) and non-glaucomatous controls (CTL) following topical application of the carbonic anhydrase inhibitor dorzolamide. OPA (Ocular Blood Flow System, OBF Labs UK) intraocular pressure (IOP), heart rate (HR), and systolic (BPsyst) and diastolic (BPdiast) bronchial artery pressures were measured before and 2 days after initiating treatment in 33 cataract patients with n = 14) and without (n = 19) POAG. Following application of dorzolamide, IOP (mmHg) in drug-treated HTG and CTL eyes was highly significantly reduced (p < 0.001) and in vehicle-treated HTG and CTL eyes significantly reduced (p < 0.03) compared to respective baseline measurements. OPA (mmHg) in drug-treated HTG and CTL eyes was significantly increased (p < 0.05) and in vehicle-treated eyes in affected compared to respective baseline measurements. Systemic perfusion parameters were also unchanged. Dorzolamide increased OPA in HTG and CTL eyes. An increase in OPA may improve the prognosis of HTG.

US$29.90

PMID: 9410235


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