Foveal avascular zone analysis in glaucoma spectrum vs healthy eyes with optical coherence tomography angiography.

OCTA (optical coherence tomography angiography) is a quick, safe ,noninvasive mode of monitoring the glaucoma progression by the assessment of superficial vessel and perfusion density in the foveal avascular zone. The patients will be divided into 2 group after undergoing all baseline investigations are categorized as POAG (if there is increased Intraocular pressure, disc changes and visual field changes). Glaucoma suspects (if there is Disc changes, increased/Normal IOP, normal visual fields). Ocular hypertension (if there is increased IOP, Normal disc, Normal visual fields) Healthy eyes (if there is Normal IOP,Normal disc and visual fields). Study group comprising of POAG (primary open angle glaucoma), OHT(ocular hypertension),Glaucoma suspects and the control group has healthy eyes. comparing the study group with the control group will help in quantifying the vascular changes and for early detection and monitoring the progression or treatment.