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Background and Identification
Medical lighting systems typically include single and/or dual light heads, which are attached to a track suspension or boom arm. Medical light heads are usually equipped with adjustable light reflection, focus, spectral characteristics, pattern, and intensity to reduce the shadows created by operating room lights. Medical lighting systems are designed to help illuminate the subject’s true colors more accurately, as regular light bulbs can cause colors to become distorted. Medical lights can also be arranged as a system of small light sources fixes at different angles for more consistent surgical light with fewer shadows.
A surgical light, also called an operating light or surgical light head, is a medical device that illuminates a local area or cavity of the patient during surgical procedures. When a combination of several surgical lights is used, it is often called a “surgical light system.” Prior to advanced surgical lighting during the mid-1850s, operating rooms were typically built towards the building’s southeast side with windows in the ceiling to benefit from natural sunlight. Therefore, surgical procedures could only be done at certain times of the day and under certain weather conditions. Even with early electrical technology, it was difficult to control the emitted light, and the electric lights tended to produce significant heat radiation.
The use of LEDs (light-emitting diodes) and other advances in medical lighting technology offer advantages over traditional tungsten-halogen and gas-discharge light fixtures. LEDs feature reduced electricity use, longer life, lower ultraviolet radiation, and reduced heat generation.