Final answer:
Optical laryngoscopes use fiber optics technology to transmit and receive light, allowing doctors to view internal body parts with high-resolution imagery for medical diagnostics and procedures.
Step-by-step explanation:
Optical laryngoscopes utilize fiber optics technology. These devices feature a bundle of optical fibers that transmit light to illuminate the larynx or other internal parts of the body. The reflected light then carries back images to the physician. The use of fiber optics in these devices has revolutionized various medical procedures by enabling high-resolution imagery and microsurgery in hard-to-reach areas of the body without the need for large incisions. Fiber optics allows for the transmission of light through thin fibers of plastic or glass by total internal reflection, guiding light even around corners and ultimately enabling the visualization of internal body structures.