His lawyers have argued his frailty and blindness means he does not pose a threat. He denied the defense's request for a limited sentence fo house arrest or probation.
The Montgomery County DA, on the other hand, pushed for a 5 to 10-year sentence to recognize that no one is above the law.
Since Constand came forward to authorities in 2005, more than 60 women have accused Cosby with similar stories as Constand's, but none of those claims led to criminal charges.
"Bill Cosby took my attractive, healthy young spirit and crushed it".
On Tuesday, Constand submitted a victim impact statement to the judge, in which she recounted the day "a man I had come to know as a mentor and friend drugged and sexually assaulted me".
Constand described how the attack had turned her into a woman who was "stuck in a holding pattern for most of her adult life, unable to heal fully or to move forward".
Bill Cosby's official mug shot has been revealed, and the TV star looks anything but happy in it.
Constand, 45, offered a much different account during emotional and often excruciating testimony at Cosby's first trial in June 2017, which ended with a deadlocked jury, and again at his retrial five months ago.
Dozens of women have accused Cosby of sexual misconduct during his 50-year career in entertainment.
Constand, who is now a massage therapist living in Canada, testified during the trial in April and in an earlier trial past year that ended with a hung jury that she had become friends with Cosby, and viewed him as a mentor. It's not immediately clear if Cosby will actually be sentenced the same day.
Throughout the nearly two-day sentencing, the prosecution reiterated Cosby's crimes and what they call his "predatory" nature: "He violated Ms. Constand's trust, which, unbeknownst to her, he spent time and energy cultivating with the specific intent of having sexual contact with her. This is a serious crime he's been sentenced for", O'Neill explained in court.
She said she first met Cosby in 2002, when she served as director of operations for Temple University's women's basketball team.
The only defense witness expected to testify Tuesday is a psychologist who believes Cosby is no longer a danger, given his age, and should not be branded a "sexually violent predator".
On Monday, Kristen Dudley, a psychologist for the state of Pennsylvania, testified that Cosby fits the criteria for a sexually violent predator, showing signs of a mental disorder that involves an uncontrollable urge to have nonconsensual sex with young women.
He is also allegedly completely blind, according to defense.