spectacles

(spek'ti-klz) [L. spectare, to regard.] Lenses set in a frame which holds them in front of the eyes, used to correct errors of vision or to protect the eyes from the glare of the sun or electric light. The parts of the spectacles are the lenses; the bridge between ^he lenses, resting on the nose; the rims or frames, encircling the lenses, now often omitted, the bridge and the shoulders being riveted directly to the lenses; the sides or temples, wires pa ing on either side of the head to the ears the bows, the curved extremities of the sides over the roots of the auricles; the shoulders, short bars attached to the rims or riveted to the lenses and jointed with the sides. bifo'cal s., see bifocal. Franklin s., divided s., an early form of bifocal s. in which the lower half of the lens is for near, the upper half for distant vision, pantos cop'ic s., bifocal s. pul'pit s., s. for near use, consisting of only the lower segment of the lens, so that the wearer may look over them for distance use. stenope'ic s., discs of wood or metal, with narrow slits in the center allowing only a minimum amoimt of light to enter.