Morphometrical analysis of the Eye ball of the Japanese quail (Coturnix coturnix japonica)

Abstract

Japanese quail presents several advantages as an animal modal to study the anatomical and histological aspects eye. They have large eyes which exhibit good optics and powerful accommodation. The present study of ocular morphometry was done in Japanese quail in three age groups. The equatorial, polar and corneal
diameter was found to increase as age advanced. Symmetry was observed between the weight of right and left eyeball, equatorial, polar and corneal diameters. The polar diameter of the eye should be associated with visual activity and the resolving ability. The corneal diameter has been associated with visual sensitivity and the light gathering ability of the eye. An enlarged cornea leads to enlarged pupil, which increases the entry quantity of light into the eye. So, the Morphometrical studies are helpful to determine the size and shape of the eye ball in avian species which will directly and indirectly contribute to the optometry of aves and will add more light to the ophthalmological studies of aves.