open access

Vol 60, No 1 (2001)
ORIGINAL ARTICLES
Published online: 2000-11-09
Submitted: 2012-02-06
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Scanning electron microscopic study of the posterior ciliary veins in domestic ungulates

Paul Simoens, Wim Van den Broeck, Henri Lauwers
Folia Morphol 2001;60(1):21-26.

open access

Vol 60, No 1 (2001)
ORIGINAL ARTICLES
Published online: 2000-11-09
Submitted: 2012-02-06

Abstract

Vascular corrosion casts of 12 equine, 15 bovine and 50 porcine eyes were studied scanning electron microscopically for the presence of posterior ciliary veins. These veins drain a postequatorial segment of the choroid and emerge near the posterior bulbar pole. They complement the four vorticose veins that emerge near or at the equatorial zone of the eyeball and the slender choroidoretinal veins that drain the peridiscal area of the choroid. Posterior ciliary veins were observed in all equine and bovine eyes examined. In these species they presented a large variation in size, number and position. In contrast, posterior ciliary veins were only present in two porcine eyes where they were represented by one and two vessels, respectively. The morphology and variability of these vessels is illustrated and their nomenclature and functional significance are discussed.

Abstract

Vascular corrosion casts of 12 equine, 15 bovine and 50 porcine eyes were studied scanning electron microscopically for the presence of posterior ciliary veins. These veins drain a postequatorial segment of the choroid and emerge near the posterior bulbar pole. They complement the four vorticose veins that emerge near or at the equatorial zone of the eyeball and the slender choroidoretinal veins that drain the peridiscal area of the choroid. Posterior ciliary veins were observed in all equine and bovine eyes examined. In these species they presented a large variation in size, number and position. In contrast, posterior ciliary veins were only present in two porcine eyes where they were represented by one and two vessels, respectively. The morphology and variability of these vessels is illustrated and their nomenclature and functional significance are discussed.
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Keywords

ophthalmology; angiology; veins; choroid; horse; ox; pig

About this article
Title

Scanning electron microscopic study of the posterior ciliary veins in domestic ungulates

Journal

Folia Morphologica

Issue

Vol 60, No 1 (2001)

Pages

21-26

Published online

2000-11-09

Bibliographic record

Folia Morphol 2001;60(1):21-26.

Keywords

ophthalmology
angiology
veins
choroid
horse
ox
pig

Authors

Paul Simoens
Wim Van den Broeck
Henri Lauwers

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