“…24 Most of these abnormalities are related to the elevation of intraocular pressure (IOP) causing damage to the optic nerve head directly. 25 However, given that at least some glaucoma patients have a normal or relatively low IOP range, other systemic conditions, such as diabetes, cardiovascular disease, and obesity, may also be relevant. 26,27 Numerous previous studies have described the involvement of primary open-angle glaucoma and normal-tension glaucoma in patients with OSAS.…”