A person qualified to make and supply eyeglasses and contact lenses for the correction of vision. I visited the optician to get a new pair of glasses after my prescription changed.
A shop or business where eyeglasses and contact lenses are made and sold. The optician on Main Street has a wide selection of stylish frames.
A person who makes or deals in optical instruments or lenses of any kind, such as telescopes, microscopes, or camera lenses. Galileo worked closely with skilled opticians to improve the quality of his telescopes.