Anatomically, the chameleons and the human vision system are where the differences are most notable. Anatomical specializations allow the chameleons eyes to rotate with a great degree of freedom. The location of their eyes on opposite sides of the head, provides a view to the sides and behind or toward the front. The human eye on the other hand, has muscles that limit eye movement. Each eyeball is held in place in the orbital cavity by various ligaments, muscle and facial expansions that surround it. The muscles attached to the eye are what provide the eyeball with movement and also allow the image to be focused at all times on the fovea of central retina. The human eyes are located in the front and can view in the peripheral without movement
