Eye Movements of the Owl.
DEFENCE AND CIVIL INST OF ENVIRONMENTAL MEDICINE DOWNSVIEW (ONTARIO)
Pagination or Media Count:
The tubular shape and tightly encapsulating orbit of the owls eye would seem to make horizontal and vertical eye rotations impossible. The amazing flexibility of the neck, allowing the head to rotate 270 degrees on the torso, would seem to make eye movements unnecessary. These two characteristics have led to the claim that the owl eye is immobile. The authors report the presence of small eye movements less than 1.5 degrees in awake, unanesthetized owls, occurring both spontaneously and elicited by visual and vestibular stimuli.
- Anatomy and Physiology