EYE: v5

THE AMAZING LENS: There is no muscle in the lens. It is a completely passive object. It’s like a frisbee that is stretched by something called the suspensory ligament.

THE AMAZING LENS: The lens of your eye lies just behind your colored iris. The lens can be stretched or relaxed to just the right thickness to focus on different objects in less than a tenth of a second!

THE AMAZING LENS: To keep the lens transparent, the lens cells do not have nuclei. After these cells are made, their nucleus is ejected, making the cells anucleated just like red blood cells.

THE AMAZING LENS: Lens cells are hooked together with dozens of button-type attachments on the edges of each cell. Why? This is so they won’t stretch.

PRECISION EYE: There are 6 muscles that control the eye. Those muscles are the most precise muscles in the body. When you focus on something, these muscles are aiming something called the fovea which is the width of a pencil lead.

PRECISION EYE: There are sixteen different muscles that control the movement of the eye. There is even a muscle with an ingenious pulley system that moves the eye directions that would impossible for the other 5 muscles to accomplish.

PRECISION EYE: The muscles in each eye work in perfect coordination with each other. If one eye tracked as little as 1/100 inch off from the other, you would see double images all the time!

PRECISION EYE:  You can whip your eyes around lightning fast and they perfectly coordinate with each other! The movement of your eye is the most precise movement in the body. 

PRECISION EYE: For other muscles in your body, there is an average of one nerve connection for every two thousand muscle cells. In your eye, however, there is one nerve connection for every two muscle cells.

PRECISION EYE:  Many birds stabilize their heads in one position as their body moves. This helps birds to precisely focus on objects at great distances with both eyes without blurring the images.