The morphometric analysis of the central retinal artery


Kocabiyik N., Yalcin B., Ozan H.

Ophthalmic and Physiological Optics, vol.25, no.4, pp.375-378, 2005 (Journal Indexed in SCI) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 25 Issue: 4
  • Publication Date: 2005
  • Doi Number: 10.1111/j.1475-1313.2005.00286.x
  • Title of Journal : Ophthalmic and Physiological Optics
  • Page Numbers: pp.375-378
  • Keywords: central retinal artery, medial posterior ciliary artery, ophthalmic artery, optic nerve, OPTIC-NERVE

Abstract

In this study, we aimed to investigate some features of the central retinal artery (CRA), which supplies the internal aspect of the retina. The CRA is the main vessel supplying blood to the retina. The origin, course and penetration point of the optic nerve by the CRA were studied in 30 human orbits. We compared the right sides to the left sides on the basis of gender in order to statistically analyse the relation between them. The CRA arose directly from the ophthalmic artery in 28 specimens. In two specimens, however, it arose in common with the medial posterior ciliary artery. When we observed the penetration point (site) of the CRA into the optic nerve, in 28 of 30 (93.3%) cases, the artery entered the nerve from the lower medial aspect and in two (6.7%) cases from the upper lateral aspect. The CRA penetrated the optic nerve between 6.4 and 15.2 mm behind the eyeball and reached the eyeball through the centre of the optic nerve. Because of the small diameter of the artery, it has a high risk of getting damaged during a surgical approach to the orbit. Therefore the anatomical relationships of this artery must be well known. © 2005 The College of Optometrists.