“Prosthetic device” means a replacement, corrective or supportive device, including any repair and replacement parts therefor, worn on or in the body:
1. To replace artificially a missing portion of the body;
2. To prevent or correct a physical deformity or malfunction; or
3. To support a weak or deformed portion of the body,
Ê except that the term does not include any corrective eyeglasses, contact lenses or hearing aids.