1. Effect of cold provocation on vessel density in eyes with primary open angle glaucoma: An optical coherence tomography angiography study

    Effect of cold provocation on vessel density in eyes with primary open angle glaucoma: An optical coherence tomography angiography study

    The cold pressor test (CPT) induces a cardiovascular response, which may affect ocular blood flow and neuronal function. This study assessed whether optical coherence tomography angiography (OCT-A) can be used to evaluate CPT-induced changes in healthy eyes and in eyes with primary open-angle glaucoma (POAG). Twenty-two healthy subjects and 23 subjects with POAG and retinal fibre layer defects in only one hemifield were included in this study. The CPT was performed by submerging a subject’s hand in cold water (0–4 °C) for 1 minute. The results showed that baseline peripapillary and macular vessel density (VD) measurements were significantly ...

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