Only when one detainee stopped being able to see out of one of his eyes did a doctor suggest stopping the physical torture affecting that area. A team of doctors decided that prisoners could be waterboarded — which simulates drowning — up to three times per day.

These are just a few of the ways scientists and medical doctors were directly involved in the CIA's torture program, as revealed in the Senate Select Comittee on Intelligence report released Tuesday.

"The torture could not proceed [without] medical supervision," Atul Gawande, a surgeon and author, wrote on Twitter. "The medical profession was deeply embedded in this inhumanity."

While a small team of psychologists designed the program, dozens of other medical professionals oversaw it.

Those who watched as prisoners were cut, bruised, and subjected to anal feeding usually made recommendations that led to people being harmed as much as possible, intervening only to prevent them from dying.

The two psychologists who developed the CIA's torture program — Jim Mitchell and Bruce Jessen — formed a company called Mitchell, Jessen & Associates and got more than $80 million from the government for their services. Mitchell did not respond to a previous attempt by Business Insider to contact him, and Jessen could not be reached. ("Everyone is assuming it is me, but I can't confirm or deny it," Mitchell told Bloomberg News.)