1. Spectacles comprising a carrier frame to be supported on a wearer for positioning spectacle lenses in front of the eyes of the wearer and a multiple lens optical instrument mounted to at least one of the lenses, characterized in that: the optical instrument extends from a front lens of the instrument at about the spectacle lens toward the wearer's eye, is less than about 16 mm in overall length, and has an internal diaphragm with an aperture of about 4 mm.