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

• Autorzy: Simoens P , Van den Broeck W. , Lauwers H.
• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

pig; horse; eye; scanning electron microscopy; morphology; ophthalmology; ciliary vein; vein; domestic animal; angiology; veterinary medicine; choroid; corrosion casting; eye-ball

• Wydawca: -
• Czasopismo: Folia Morphologica
• Rocznik: 2001
• Tom: 60
• Numer: 1
• Opis fizyczny: p.21-26,fig.

Twórcy

autor

Simoens P

• Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium

autor

Van den Broeck W.

autor

Lauwers H.

Bibliografia

• 1. Bach L (1894) Ueber die Gefässe des Pferdeauges mit besonderer Berücksichtigung der Gefässversorgung der Aderhaut. Arch wissenschaft prakt Thierheilkunde, 20: 241–256.
• 2. Brooks DE, Samuelson DA, Gelatt KN, Smith PJ (1989) Scanning electron microscopy of corrosion casts of the optic nerve microcirculation in dogs. Am J Vet Res, 50: 908–914.
• 3. De Laey JJ (1977) Fluoroangiografische studie van de normale en pathologische chorioidea bij de mens. Junk W Publishers, Den Haag.
• 4. Hetkamp D (1972) Korrosionsanatomische Untersuchungen der Blutgefäbe des Auges des Haushundes (Canis familiaris L.) unter besonderer Berücksichtigung des Kapillarsystems. Thesis, Justus Liebig-Universität Giessen.
• 5. Nomina Anatomica Veterinaria (1994) 4th edition, World Association of Veterinary Anatomists, Zurich.
• 6. Simoens P (1985) Morphologic study of the vasculature of the orbit and eyeball of the pig. PhD thesis, Ghent.
• 7. Simoens P (1993). In vivo en in vitro studie van experimentele occlusie van chorioidale en retinale bloedvaten bij het miniatuurvarken. Verhand Kon Acad Geneesk België, 4: 319–375.
• 8. Simoens P, Muylle S, Lauwers H (1996) Anatomy of the ocular arteries in the horse. Equine Vet J, 28: 360–367.
• 9. Smith P (1921) On the eye of the ox and its internal blood vessels. British J Ophthalmol, 5: 385–410.
• 10. Wong VG, Macri FJ (1964) Vasculature of the cat eye. Arch Ophthalmol, 72: 351–358.