A 32-year-old man who seriously assaulted and neglected a four-month-old baby boy has been jailed for eight years.
Darran Brown, of Long Lane, Grays, Essex, was found guilty following a trial at Guildford Crown Court.
He was charged with child neglect and grievous bodily harm towards the child at a property in Leatherhead, Surrey.
Det Con James Chapman, from Surrey Police, said Brown committed a “cruel and violent act on an innocent child”.
Hospital staff contacted police after the boy was admitted in a critical condition with serious head and facial injuries in April 2011.
Police said the injuries he suffered mean he will never live an independent life.
Det Con Chapman said: “This was a cruel and violent act on an innocent child who was unable to defend himself against a grown man and although this sentence will never undo the damage caused by this man it will make sure people are protected from him for some time.
“Crimes against our most vulnerable members of society are inexcusable.”