PMID: 8594523Feb 1, 1996Paper

Watershed zone in the human peripheral choroid

Ophthalmology
K TakahashiK Shimizu

Abstract

To evaluate the angioarchitecture and the hemodynamics in the peripheral choroid in humans. Choroidal circulation was examined in 23 normal eyes and in 7 with equatorial lattice degeneration by wide-angle indocyanine green (ICG) angiography using a scanning laser ophthalmoscope. A hand-held 30-diopter lens was placed in front of the eye to expand the observation angle from the original 40 degrees to 70 degrees. The peripheral temporal choroid and the ora serrata thus could be seen in one frame. An arterial watershed zone was identified in the temporal peripheral choroid in 21 of 30 eyes. This watershed zone was located in a sectorial region posterior to the ora serrata. It did not form a circular belt along the equator. The area anterior to the watershed zone was supplied by peripheral retrograde choroidal arteries. Inflow of dye into the peripheral retrograde choroidal arteries was consistently later than into the more posterior choroid via short posterior ciliary arteries. The terminal branches of peripheral and short posterior ciliary arteries did not form functional anastomoses. Peripheral retrograde choroidal arteries showed wide variations in number and distribution. These arteries originated from recurrent branches of lo...Continue Reading

References

Oct 15, 1989·American Journal of Ophthalmology·A Scheider, C Schroedel
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Citations

Nov 18, 2006·Graefe's Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Für Klinische Und Experimentelle Ophthalmologie·Efstathios T DetorakisVassilios P Kozobolis
Mar 25, 1998·American Journal of Ophthalmology·K TakahashiK Shimizu
Dec 8, 2004·Retina·Noriko UtsugiShoji Kishi
Jun 18, 2014·Current Diabetes Reports·Szilárd Kiss, Thomas L Berenberg
Sep 6, 2005·American Journal of Ophthalmology·Ayyakkannu ManivannanJohn V Forrester
Jul 31, 1998·American Journal of Ophthalmology·K TakahashiK Shimizu
Apr 20, 2016·Frontiers in Neurology·Paul Rutkowski, Christian Albrecht May
Jan 20, 2017·The British Journal of Ophthalmology·Muka MoriyamaKyoko Ohno-Matsui
Nov 20, 2019·Neuro-ophthalmology·Abhilash GuduruPreeti Patil-Chhablani
Apr 22, 2017·Graefe's Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Für Klinische Und Experimentelle Ophthalmologie·Joong Won ShinMincheol Seong

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