An attacker who left his victim with permanent facial nerve damage was jailed for 18 months.
Liam Walker, 26, of Clepington Road, Dundee, appeared at the sheriff court on Monday.
He previously admitted glassing Craig Anderson in the face, to his severe injury, permanent disfigurement and permanent impairment, on October 11.
The attack took place on a Friday night in the Nethergate Inn, where Mr Anderson was having drinks with friends.
The court heard how one of the friends had become upset at Walker who called him a ‘gay boy’ because of the jumper he was wearing, which had leopard print sleeves.
After more comments were made Mr Anderson spoke to the accused and asked him to leave them alone, before attempting to pass Walker, who had an empty wine glass in his hand.
As Mr Anderson turned away, Walker hit him in the face with the glass.
Mr Anderson initially thought he had been punched and became involved in attempting to restrain Walker, however he soon realised he was bleeding heavily from his right cheek.
He was taken to Ninewells Hospital, where doctors discovered he had three cuts to his face, one of which was deep and still had a piece of glass in it, causing internal bleeding and swelling.
He received three stitches at the hospital. A week later he attended a specialist clinic where he was found to have facial nerve weakness to the right side of his face.
It was noted at a further appointment on February 5 that his motor function had improved but Mr Anderson still had reduced sensation in the face.
Walker also admitted behaving in a threatening and abusive manner by making homophobic remarks.
Sentencing Walker, who was a first time offender, Sheriff Munro told him he had “ruined a young man’s life” and only a custodial sentence was appropriate punishment.