- You may wish to consult
Organfor other, similarly-named pages.
An organ was a complex system in an organism which typically performed a vital process which kept the organism alive. Sustaining damage to an organ could cause pain, (TV: The Power of Three, The Tsuranga Conundrum) or even death. (TV: The New World)
Eyes were used for sight. While some species, such as the Time Lords and humans, had two eyes, (TV: An Unearthly Child, et al.) some Silurians had three eyes. Their third eye could be used for telepathic purposes or as a weapon. (TV: Doctor Who and the Silurians, PROSE: Blood Heat, AUDIO: Bloodtide)
In the 51st century, the Clockwork Droids of the SS Madame de Pompadour used their human crew's organs to replace ship parts. Rose Tyler and Mickey Smith found a heart wired up to machinery, and an eyeball incorporated into a security camera. Their ultimate objective was to seize the brain of Madame de Pompadour in 18th century France, when she was of the same age of their spacecraft. The Droids were stopped by the Tenth Doctor. (TV: The Girl in the Fireplace)
In the 1890s, a Clockwork Droid from the SS Marie Antoinette scanned the Twelfth Doctor, and listed organs they could harvest, as items on the menu at Mancini's Family Restaurant: liver, spleen, brain stem, eyes, lungs and skin. (TV: Deep Breath)