Diurnal Variations of Peripapillary and Macular Vessel Density in Glaucomatous Eyes Using Optical Coherence Tomography Angiography.

Purpose: The purpose of this study was to investigate the diurnal variation in peripapillary and macular vessel density (VD) measurements using optical coherence tomographic angiography (OCT-A) and its correlation to intraocular pressure (IOP) changes in glaucoma patients.

Methods: Prospective, observational cross-sectional study including 37 patients (74 eyes; age, 63.8±12.

[Glaucoma: trends in the study of its etiology].

Background: There are different etiologies related to glaucoma, with the involvement of different systems in the origin and development of the disease.

Methods: We performed a literature review.

Results: The data is divided, with an emphasis on five main topics: systemic disease, neurodegenerative disease, genetic disease, immunological disease, and aging of the trabecular meshwork.