cheek augmentation

I had cheek implant surgery about 15 yrs. ago.  Went to dermatological surgeon yesterday for Radiesse around nasolabial folds.  She suggested I do some Radiesse in cheekbone area.  I mentioned that I'd had cheek implants years ago.  She decided not to inject  Radiesse in cheeks, but suggested I "redo" the implants, as they've probably fallen by now.  She also noted my eye area has some "hollowing," which I've been aware of. She thought implants had to be removed after a certain amount of years and updated.   Is this true?  Is there another way to hollow out the eye area and enhance the cheek area without invasive techniques?   Thanks very much in advance.  Harriet