Glasses are used to correct blurry vision. Since clear vision with glasses is preferable to uncorrected vision, you may find that you want to wear your glasses more often. Although it may feel as if you are becoming dependent on your glasses, you are actually just getting used to seeing clearly. Some people have been led to believe that wearing contact lenses will permanently correct nearsightedness, so that eventually they won't need either contacts or eyeglasses. There is no evidence that wearing contact lenses produce a permanent improvement in vision or prevents nearsightedness from getting worse.
Medical science has no way to transplant whole eyes.
Our eyes are connected to the bring by the ptic nerve. The optic nerve, much like a fiberoptic cable, is made up of more than one million tiny neve fibers. Because of this, the eye is never removed from its socket during surgery. The cornea, the clear front part of the eye, has been successfully transplanted for many years. This corneal transplant is sometimes confused with an eye transplant.