Why do we have two eyes, facing forward and not on the sides so that we can see most everything around us like other animals? There are advantages and disadvantages to both types of eye placements. Our two eyes are face forward, what is called stereovision, because they work together to make sense out of an image and with depth perception (seeing in 3D). Other animals with eyes on the sides, like fish, cannot see straight ahead as well as we can. Most of the times they use their peripheral vision to see straight or else they have turn their heads to the side. Their depth perception is not as good as ours, but their main purpose for sight is to protect them from danger all around.

Each component that make up the eye work together so that you enjoy a good sight. Learn about the major parts of they eye by clicking on an area above you are interested in. There are some interesting facts about each part that you may never have known before!