Journal of
Cell and Animal Biology

  • Abbreviation: J. Cell Anim. Biol.
  • Language: English
  • ISSN: 1996-0867
  • DOI: 10.5897/JCAB
  • Start Year: 2007
  • Published Articles: 262

Full Length Research Paper

Ultra structural and histomorphometric study of retinal pigmented epithelium of retina in female cat under the effect of continuous light exposure and dark adapted

Alireza Yousofi1*, Arash Esfandiari2 and Hooman Bozorgi3
1Pathological Sciences, School of Veterinary medicine, Islamic Azad University- Abadeh branch, Abadeh, Iran. 2Anatomical sciences, School of Veterinary medicine, Islamic Azad University-3Kazeroon branch, P. O. Box: 73135-168, Kazeroon, Iran. School of Veterinary Medicine, Shiraz University, Shiraz, Iran.
Email: [email protected]

  •  Accepted: 31 December 2008
  •  Published: 28 February 2009


The aim of this study was to evaluate the morphometry and ultra structure of retinal pigmented layer in continuous light exposed and dark adapted domestic female cats. Twenty four healthy adult cats were divided into three groups: control, continuous light exposed and continuous dark adapted groups. The eyes of animals were routinely fixed and studied by electron microscope. The results showed that in light exposed group, the mean of thickness and number of melanosome of retinal pigmented layer had significant increment when compared with  control and dark adapted groups (P<0.05). Mitochondria, golgi apparatus and rough endoplasmic reticulum were also observed to increase in the light exposed group. Our finding have confirmed that high cell activity occur in cat retinal pigmented layer under the effect of 24 h continuous light.


Key words: Morphometry, ultra structure, retinal pigmented layer, cat.