Anatomic and radiographic studies of the lacrimal drainage system in Korean native goat

한국재래산양 코눈물관계통의 해부학적 및 방사선학적 연구

  • Seo, Kang-moon (College of Veterinary Medicine, Seoul National University) ;
  • Kang, Tae-cheon (College of Veterinary Medicine, Seoul National University) ;
  • Lee, Heungshik S (College of Veterinary Medicine, Seoul National University) ;
  • Lee, In-se (College of Veterinary Medicine, Seoul National University) ;
  • Nam, Tchi-chou (College of Veterinary Medicine, Seoul National University)
  • Received : 1995.09.05
  • Published : 1996.03.25

Abstract

This study was carried out to identify the gross anatomical and radiographic characteristics of the nasolacrimal system of the Korean native goat. The results were as follows : The nasolacrimal system are composed of two lacrimal ducts, two lacrimal, canaliculus, one lacrimal sac and one nasolacrimal duct. The nasolacrimal duct was divided into proximal, middle and distal portion. The nasolacrimal duct took a straight course to be paralleled with nasal bones and opened close to the nostril on the medial surface of the alar fold. The diameter of lacrimal punctum, the length of eyelid margin to lacrimal punctum, the length of canaliculus and the diameter of lacrimal sac were 0.82~0.90mm, 1.06~1.54mm, 5.65~6.30mm and 1.77~2.06mm, respectively. The length of proximal, middle and distal nasolacrimal duct were 36.84~40.00mm, 23.53~24.31mm and 14.55~14.73mm, respectively. The diameter of the orifice of nasolacrimal duct, the length of lateral margin of nostril to orifice of nasolacrimal duct and the length of dorsum to orifice of nasolacrimal duct were 1.29~1.33mm, 12.97~12.53mm and 15.24~16.11mm. The skull index of Korean native goat was not significantly different from the length of nasolacrimal duct.