Primitive Fiber Optics (Mar, 1939)
Piped Light Aids Surgeons and Dentists
PIPED LIGHT, providing surgeons and dentists with powerful, sterile beams devoid of heat, glare, or the danger of electrical shock, is made possible by instuments molded from a transparent plastic which carries light around curves and bends (P.S.M March ’37, p. 43). The molded hand-held rodlike instruments have electric bulbs at their bases, powered either through extension cords from transformers that cut down 110-volt current to six volts, or by flash-light cells in a special base. Among the new plastic instruments are a tongue depressor that throws a concentrated beam on the throat of a patient, a retractor which serves the double purpose of holding back the cheek and lighting the mouth, and a long curved rod which casts a brilliant beam on the teeth.