OK, we agree that Medicare pays for lenses(permanent contact lens). So, no one needs glasses anymore.(monovision if needed -one eye is near vision and one eye is distance)Has a lot to do with what Medicare will pay for. The basic lens is usually fully covered and the more advanced lens has a larger co-pay.
Most Seniors don't see the need for x-ray vision and even the basic lens will keep you from looking like Mr. Magoo.