Comparison of Microvasculature and Fundus Morphometric Features in High Myopia Regard to the Presence of Beta Zone Peripapillary Atrophy

Abstract

Purpose: To compare the microvasculature and fundus morphometric features between the high myopic eyes with and without the beta zone peripapillary atrophy (β-PPA). Methods: 38 eyes with high myopia (mean spherical equivalent (MSE) ≤- 6.00D) and 30 age-matched emmetropic eyes (- 1.00 ≤ MSE<+0.75D) were included in this prospective study. Two groups were created according to presence of β-PPA. Group 1 consisted of 26 eyes with normal OD, and group 2 consisted of 12 eyes with β-PPA. The vertical distance between the temporal superior and temporal inferior arterial arcade (VDA), the distance fovea to disc (DFD), and optical coherence tomography angiography (OCTA) were compared between the groups. Results: The mean VDA and DFD were higher in group 2 than group1 and control group. The mean foveal avascular zone was larger and peripapillary VD was lower in all myopic eyes regardless of the presence of β-PPA in group 1 and 2 than the controls