Peripapillary Atrophy - American Academy of Ophthalmology
2024年1月5日 · What is peripapillary atrophy and how is it treated? Peripapillary atrophy describes atrophy or thinning in the layers of the retina and retinal pigment epithelium around the optic nerve in the back of the eye. There is no treatment and it typically does not cause any symptoms or vision loss. This question was originally answered on Oct. 29, 2012.
Parapapillary atrophy and changes in the optic nerve head and ... - Nature
2020年3月12日 · Classic funduscopic β-parapapillary atrophy (β-PPA) is a region of visible large choroidal vessels and sclera due to the lack of retinal pigment epithelium (RPE). β-PPA can be histologically...
atrophy around the optic disc. This chorioretinal atrophy is known as peri-papillary or para-papillary atrophy (PPA), and is a relatively common finding. 3 Fluorescein or indocyanogreen angiopathy show characteristic filling patterns that can be used to further differentiate the peripapillary atrophy.
Parapapillary atrophy in optic neuropathies: Histology and …
In this review we discuss the histology and the clinical findings related to parapapillary atrophy in patients with glaucomatous optic neuropathy, non-glaucomatous optic neuropathies (e.g. arteritic and non-arteritic anterior ischemic optic neuropathies; suprasellar and parasellar tumors), and other ocular conditions (e.g. high myopia; age ...
Parapapillary atrophy: histological gamma zone and delta zone
Parapapillary gamma zone (peripapillary sclera without overlying choroid, Bruch's membrane and deep retinal layers) was related with axial globe elongation and was independent of glaucoma. Delta zone (no blood vessels >50 µm diameter within gamma zone) was present only in highly axially elongated …
Controversies in the association of parapapillary atrophy with …
Parapapillary atrophy (PPA) is defined as the thinning, misalignment, irregularity, and degeneration of the RPE, choriocapillaris, choroid, and sclera just adjacent to the outer border of the optic disc.
Parapapillary Atrophy: Histological Gamma Zone and Delta Zone
2012年10月18日 · Parapapillary gamma zone (peripapillary sclera without overlying choroid, Bruch's membrane and deep retinal layers) was related with axial globe elongation and was independent of glaucoma. Delta zone (no blood vessels >50 µm diameter within gamma zone) was present only in highly axially elongated globes and was not related with glaucoma.
β-Zone Parapapillary Atrophy and Rates of Glaucomatous Visual …
Parapapillary atrophy was initially characterized clinically and morphologically, consisting of 2 distinct morphologic components: a region of variable hyperpigmentation and hypopigmentation of the retinal pigment epithelium found within the α-zone PPA and an area adjacent to the optic disc characterized by atrophy of the retinal pigment ...
Microstructure of Parapapillary Atrophy: Beta Zone and Gamma …
In our clinical study on parapapillary atrophy, we differentiated on OCT images between a peripheral beta zone defined as Bruch's membrane devoid of retinal pigment epithelium cells, and a more centrally located gamma zone defined as parapapillary sclera without overlying choroid, Bruch's membrane, and deep retinal layers.
Five-Year Follow-Up of Parapapillary Atrophy: The Beijing Eye …
2012年5月7日 · Since the early 20th century, parapapillary atrophy has been recognized as an essential part in the description of the morphology of the optic nerve head in normal eyes, eyes with glaucomatous optic neuropathy, and eyes with a non-glaucomatous optic nerve damage –.