The MBO directs you to the Federal Trade Commission which provides guidance for Contact Lens Rule and Ophthalmic Practice Rules pertaining to eyeglasses. Both provide federal guidelines with the Minnesota Board of Optometry as the state authority on this issue for Optometrists. Minnesota created additional language for Contact Lens Prescriptions found in Minnesota Statutes 145.712.
Minnesota Statutes 169.71 offers guidance on the laws pertaining to windshield glazing materials or window tinting. This statute was created to ensure safety for the peace officers visibility of car occupants is in the Department of Public Safety statute.