In common, medicare are not cover eyeglasses. However, if you need eyeglasses after cataract surgery, you may use medicare to buy a pair of eyeglasses. Also, you shall go to a Medicaid optician if you want to buy eyeglasses with medicare since not all eyeglasses shop can accept medicare for eyeglasses. As for how much will medicare pay for the eyeglasses, you can call 1-800-MEDICARE for exact info.