Police are hunting for a group of men after a young man was punched and kicked to the ground near Fabric nightclub in Farringdon.
Callum Wade, 22, was left with several facial fractures and permanent eye damage from the unprovoked attack.
Shocking pictures show Callum bruised and bloodied, with two black eyes and a swollen face - and it is feared his eye damage is permanent.
He was with two friends central London, when he was punched and kicked to the ground.
They also assaulted Callum's friend, a man in his 20s, but he was not left seriously injured.
After the men left, Callum sought help from staff at nearby Fabric nightclub. They gave him first aid and called a cab which took him to hospital.
Callum, of Maidenhead, Berkshire, suffered several facial fractures and permanent damage to his retina from the attack on April 1.
The Metropolitan Police has released footage of three of the four men believed to have been involved in the attack.
Anyone with information is asked to contact DC Pinder at the Central North Command Unit on 0208 345 0119 or call Crimestoppers anonymously on 0800 555 111.