Md. Code, Health Occupations § 11–102

(a) This title does not limit the right of an individual to practice a health occupation that the individual is authorized to practice under this article.

(b) This title does not affect the right of:

(1) An optician to provide glasses on the prescription of a licensed optometrist or a physician who is authorized to practice medicine under Title 14 of this article; or

(2) A dealer to sell eyeglasses or lenses if the dealer does not practice or claim to practice optometry.