A device used to warm plastic spectacle frames in order to soften its material sufficiently to allow insertion of lenses and/or adjustment. Some frame heaters warm air, which is directed to the area of the frame that is to be altered. Others heat salt or glass beads to a given temperature and the part of the frame that is to be altered is placed into the heated material. Syn. frame warmer. See plastic spectacle frame.
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann