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May 1987

Angioarchitecture of the Human Choroid

Author Affiliations

From the Department of Ophthalmology, Gunma University School of Medicine, Showamachi, Maebashi, Gunma, Japan (Dr Yoneya); and the Department of Ophthalmology, University of Illinois at Chicago (Dr Tso).

Arch Ophthalmol. 1987;105(5):681-687. doi:10.1001/archopht.1987.01060050099046

• The angioarchitecture of the human choroid was studied by corrosion vascular casts and scanning electron microscopy. The relationship of the large choroidal arteries and veins, medium-sized arteries and veins, precapillary arterioles and postcapillary venules, and the choriocapillaris is described. At the posterior pole, a lobular arrangement of the choriocapillaris is seen. At the equatorial area, the capillaries run a more direct course, joining the precapillary arterioles to the capillary venules in a spindle-shaped segment of the choroidal vasculature. At the periphery, the choroidal arterioles and venules take a parallel course, with the choriocapillaris joining the adjacent arterioles and venules at a right angle and appearing in a ladder pattern. The regional variation of the angioarchitecture of the human choroid provides supporting evidence for the unique regional characteristics of choroidal blood flow.

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