Britanny Stone, 28, knifed her victim so forcefully that the blade penetrated his brain and he had to have an removed after the incident in Nottingham last year.
The unnamed victim had been drinking at his flat in Chilwell, with Stone when a row erupted in the early hours of July 4.
He walked outside but Stone followed him with a knife from his kitchen and stabbed him in the head.
Detective Constable Peter Burrows, of Nottinghamshire Police, said: ‘This was a vicious attack which left the victim with life-changing injuries.
‘The force of the blow to his face resulted in the knife penetrating into his brain. He had to have his eye removed and is due to be fitted with a false eye.’
He also had a bleed on the brain.
Stone was arrested at the scene and later pleaded guilty to a charge of grievous bodily harm with intent.
She was jailed for three years at Nottingham Crown Court on Wednesday, July 21.
Mr Burrows continued: ‘I am pleased to see this result from court and that she has been handed a lengthy prison term for her serious crime.
‘Nottinghamshire Police takes reports of knife crime extremely seriously and we acted quickly to arrest Stone in connection with this incident.
‘Violence of this kind is unacceptable and I’d like to reassure people that we remain committed to driving down knife crime even further in our communities.
‘We will continue to work tirelessly to remove dangerous weapons off our streets and take robust action against anyone believed to be involved in violent crime.’