At the second-degree murder trial for Robert Harris Lamb Tuesday, testimony was heard about others who were injured at an Antigonish New Year's Eve party where Jonathan Robert Beaton was stabbed two years ago.

Robert Harris Lamb is charged with second-degree murder in the death of Jonathan Robert Beaton. (CBC)

Beaton died hours later in hospital.

Stan Rudolph was one of the four people renting the home at 123 College St. where Beaton was stabbed on Jan. 1, 2010.

After midnight, Rudolph was in the kitchen restraining a person with an eye injury he believed wanted to use a beer bottle as a weapon.

Rudolph testified in the Nova Scotia Supreme Court in Pictou he then jumped in to help a friend who was in a fight on the floor.

"I looked up and saw the guy who tried to smash the beer bottle, with a knife."

He was asked in court how the man was holding the knife, Rudolph answered, "in the attack stance, with the handle by his ear and the blade pointed down."

Earlier testimony said that the accused Lamb had a similar eye injury and a photo of Lamb with a bruised eye was entered by the defence.

This photo was presented by the defence, showing Lamb with a bruised eye. (CBC)

Carissa Pettipas identified Lamb as the person she saw being restrained in the kitchen.

"His eye was swollen up and looked really beaten up," she told the court.

Pettipas said two people were holding him, and he had a knife in his right hand.

Under cross-examination, she admitted to identifying someone else in a photo as Lamb during the police investigation.

She later went to the Crown to admit her mistake around the time of the incident.

Dwayne MacDonald told the court he tried to break up the fight until someone came after him with a knife.

MacDonald said he was blocking the blows with his arms, but when he tried to go after the knife he said "then buddy put the gun to the side of my head and told me not to move. I looked and saw the barrel. He said 'Stay out of this. My boys are in there.'"

MacDonald said he couldn't identify who attacked him.

Josh MacKeigan suffered a serious stab wound to his back at the party. He said he was in the kitchen trying to stop the fights when he had a "cold feeling and I just dropped and fell to the floor."

MacKeigan spent about a week in hospital recovering from his injuries and says he still has trouble with his back.

He told the court he's suffering from post-traumatic stress disorder.