Main posterior watershed zone of the choroid
- 1 June 1989
- journal article
- research article
- Published by Springer Science and Business Media LLC in Documenta Ophthalmologica
- Vol. 72 (2), 175-180
- https://doi.org/10.1007/bf00156707
Abstract
The main posterior watershed zone of the choroid is located between the nasal edge of the optic disc and the fovea and represents the area situated between the territories supplied by the temporal and nasal posterior ciliary arteries. In the fluorescein angiographies of 800 normal subjects a watershed zone was not observed in 33.1% due to technical reasons and in 22.3% due to the simultaneous filling of the peripapillar and macular choriocapillaris. In the remaining 44.6% the watershed zone was well outlined: it was straddling the optic disc in about half of these cases and involved the temporal half of the optic disc and the close choroid in the other half. Very rarely the watershed zone involved the nasal half of the optic disc or the papillo-macular area. The position of the watershed zone could be important to explain the visual field defect in anterior ischemic optic neuropathy and glaucoma.Keywords
This publication has 11 references indexed in Scilit:
- Choroidal filling pattern during a hypotensive crisisAlbrecht von Graefes Archiv für Ophthalmologie, 1987
- Inter-individual variation in blood supply of the optic nerve headDocumenta Ophthalmologica, 1985
- Physiological anatomy of the choroidal vascular bedInternational Ophthalmology, 1983
- Choroidal IschemiaAmerican Journal of Ophthalmology, 1982
- Anterior Ischemic Optic NeuropathyPublished by Springer Science and Business Media LLC ,1975
- Retinal, Choroidal, And Papillary Circulations Under Conditions of Induced Ocular HypertensionAmerican Journal of Ophthalmology, 1972
- Fluorescein Angiography During Induced Ocular Hypertension in ManAmerican Journal of Ophthalmology, 1970
- THE OPHTHALMIC ARTERY: III. BRANCHESBritish Journal of Ophthalmology, 1962