Delivered August 22, 2019. Contributor: Kiersten M.
To understand how surgical lighting and lighting instruments in the operating room have evolved over time.
Surgical lights - also known as an "operating light or a surgical lighthead" - date back to the 1850's originally.
In early operating rooms, lighting came from skylights, with the OR being build towards the southeast to maximize the amount of light flowing into the room.
In order to avoid light being blocked by individuals in the OR, mirrors were later added to the corners of the room to reflect light.
When electric lights first debuted, they were immediately added to ORs. While this solved the problem of light being blocked by individuals in the room, it created a new problem: "the first lights created great heat radiation and the emission of light was hardly controlled".
When LED lights hit the market, they replaced electric lights and eliminated the problems with radiation.