Deprivation punishment

Deprivation punishment, also known as a darkness sentence was a government-sanctioned practice whereby a person is isolated and permanently restrained for a period of time, with no access to views or light. As such, the condemned, who is usually fed by tube, is punished with sensory deprivation, often leading to psychotic states and severe mental illness.
The punishment was phased out in the 1780's, citing human rights abuses and misuse of the punishment. The last person to be sentenced was Vukanimar Qelthum in 1805, who died six years into his sentence from a brain aneurysm.