John Desborough, 41, was giving a demonstration to pupils at Liverpool College last month when he slipped.

The BBC's Andy Bell: Mr Desborough suffered complications

The blunt end of the javelin penetrated his eye socket and caused severe brain damage.

On Thursday he died at Walton Neurological Centre on Merseyside.

Following the accident, pupils flagged down a passing ambulance which took Mr Desborough to hospital.

Doctors had hoped to save his eye, but on Tuesday, after three weeks in a coma, he developed a chest infection which caused his condition to worsen.

College principal Jon Siviter said staff, pupils and parents were keeping Mr Desborough's family at the forefront of their thoughts and prayers.

He said the college chaplain and councellor would be available over the next few days to help any pupil or member of staff who felt they needed support.