The winners of the large eye contest are the owls. If we had eye proportional to those of the great horned owl, our eyes would be the size of grapefruit and weigh five pounds each. The difference between the hunted and the hunter is evident in the owls. The hunted have eyes on the sides of their heads to obtain a wide field of view. The hunters have their eyes on the front of their heads to increase depth perception.
Owls have the most frontally positioned eyes of any animal.
Their field of vision is limited to 110 degrees whereas ours is 180 degrees. Contrary to popular belief owls have excellent vision both in daylight and at night. Their pupils are huge at night, letting in great quantities of light and in daytime shrink down to the size of a pinpoint. Owls can see 35 to 100 times better than humans can in dim light. Owls have a large concentration of light sensitive rods usually at the expense of color defining cones.