Uvealtrakt

Vaughan, D.; Asbury, T.

doi:10.1007/978-3-642-69329-8_10

Cited by 1 publication

(1 citation statement)

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“…Indeed, on angiographic inspection, the filling pattern of fluorescein angiography in the eye was successively observed as the choroidal phase, which is characterized by the first filling of the choriocapillaris and then the retinal arterial phase, which in turn is characterized by a hyperfluorescence of the retinal arteries. Again, the rich blood supply to the choriocapillaris with high oxygen pressure and a large vascular permeability would be anticipated considering its role in diffusing oxygen and nutrients through the choroicapillaris to nourish the retina 15 …”

Section: Discussionmentioning

confidence: 99%

Microvasculature of the rat eye: scanning electron microscopy of vascular corrosion casts

Ninomiya

Kuno²

2001

Veterinary Ophthalmology

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Methylmethacrylate castings of the eye microvasculature were prepared from 10 Spargue-Dawley rats and studied by electron microscopy. The choroidal arterioles are larger in diameter than retinal arterioles, and have a shorter course to choroidal capillaries than retinal arterioles to retinal capillaries. Retinal capillaries are extremely thin in diameter and form a sparse retinal capillary network. The choriocapillaris is large and sinusoid-like, forming a compactly arranged network in the choroid. These differences in the microvasculature between the choroid and retina help explain the differences in ocular hemodynamics; that is, the blood flow in the choroid is faster than that in the retina. Capillaries of the iris show a zigzag configuration, which may be an accommodation for dilation and constriction of the pupil. Capillaries of the ciliary body are of large diameter forming leaf-like configurations, presumably to contribute to the secretion of the aqueous humor. Capillaries of the conjunctiva exhibit a somewhat coiled configuration, the arrangement of which reduce tension of the conjunctiva vessels caused by eyeball movement. Intra-arterial cushions, which control blood flow at the branching sites, are found in both choroidal or retinal arterioles.

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Section: Discussionmentioning

confidence: 99%