SCHEMATIC EYE OF THE ADULT ARABIAN CAMEL (Camelus dromedarius)

Eye is a homocentric system of lenses, which when combined in action form a very strong system of short focal length. Schematic eye models have been constructed for human, and many animals' species but none has been published for the Arabian camel. This paper is aimed to build a schematic model of adult Arabian camel eye based on ecobiometric values of live camels and describe its visual properties. Results indicated that the total refracting power of the corneal and lens systems are 28.48D and 37.53D, respectively. The total refracting power of the whole optical system is 59.25D. The principle points H, H' are 3.46 and 4.6 mm and the nodal points, N, N' are 10.05 and 11.22 mm behind the anterior surface of the cornea. The focal points, F, F' are -13.42 and 28.09 mm and the focal lengths, f, f' are -16.88 and 23.47 mm. For the reduced eye; the average index of refraction inside the eye, n'=1.3908 and the combined total dioptric power is +66D. The principle point, and the nodal point, are located 4 mm and 10.63 mm behind the anterior surface of the cornea, respectively. The focal points F, F' are -13.42 and 28.1 mm, whereas the focal lengths f, f' are -17.46 and 24.1 mm.