WebApr 23, 2024 · The alpha zone was defined as irregular hyperpigmentation and hypopigmentation in peripheral area of PPA. The beta zone was defined as visible large choroidal vessels and sclera between the... WebBackground: To examine the psychophysical correlate of alpha zone and beta zone of parapapillary atrophy. Methods: The study included 20 eyes of 10 patients affected by primary open-angle glaucoma and 12 normal eyes of six subjects. The parapapillary region was psychophysically examined by direct fundus microperimetry. The parapapillary …
Peripapillary Halo in Birdshot Chorioretinopathy OPTH
WebJul 1, 2024 · Alpha zone is present in almost all eyes. Beta zone is associated with glaucoma and may develop due to a IOP rise-dependent parapapillary up-piling of RPE. … WebMar 1, 2013 · Optic nerve head anatomy in myopia and glaucoma, including parapapillary zones alpha, beta, gamma and delta: Histology and clinical features. ... Optic disc torsion, tilt, and peripapillary atrophy area were calculated in 2-dimensional disc photographs. The most posterior point—that is, the deepest point of the eye (DPE)—was identified in 3 ... chitengestories.com
Optic nerve head anatomy in myopia and glaucoma, including
Webparapapillary atrophy. Beta zone was characterized by visible sclera and visible large choroidal vessels and a location between the peripapillary scleral ring and alpha zone. … WebApr 6, 2024 · Peripapillary atrophy (PPA) occurs commonly in glaucoma, and is characterised by the loss of retinal pigment epithelium (RPE) adjacent to the ONH. Under pro-fibrotic conditions, epithelial cells throughout the body can differentiate into fibroblast-like cells through epithelial-to-mesenchymal transition (EMT) and contribute to ECM … WebPurpose: To quantitatively analyze α-zone and β-zone peripapillary atrophy (PPA) in patients having early primary open-angle glaucoma (POAG) using fundus autofluorescence (FAF) … chitenge short dresses