The first frames for eyeglasses were carved out of wood, bone, and other natural materials. Nowadays, sophisticated manufacturing technology and engineering make it possible to create eyewear out of plastic resins, precious metals such as silver and gold, technologically advanced metal alloys, such as titanium, that reduce weight—even bamboo and leather. You can buy frames that bend and frames that float.
The materials used for lenses are probably even more diverse, with various minerals being melted and polished to create the base material, and various chemical coatings being applied to create different effects for the wearer.
However, some people may find they have allergies to materials used to create eyeglasses.