Shannon Watson was giving evidence in the trial of Lisa Maree Doolan of Youngtown who has pleaded not guilty to causing him grievous bodily harm on June 4, 2016.

Ms Doolan has pleaded not guilty.

The court heard that Mr Watson had received a corneal transplant about a week before the incident.

In giving evidence Mr Watson said he had returned to Ms Doolan's home after a party when she confronted him in the hallway.

He could see she was angry and upset.

"She fired a punch at me but I ducked out of the way but as I straightened up she let another one fly but it also missed," he said.

He said when she fired a third punch it had hit him "square in the left eye".

He said the punch had caused extreme pain and he went into the bedroom and panicked.

He said he had vomited in the bed.

In cross examination defence counsel Fran McCracken suggested to Mr Watson that the force of his vomiting had caused the damage to his eye.

"That ridiculous, you could not make this stuff up," he said.

In her opening Ms McCracken said Ms Doolan absolutely denied trying to strike Mr Watson.

"The issue in this trial is what caused the injury to Mr Watson.'

She said it was some other misadventure or self inflicted injury.

The trial continues.