Detective Inspector Dan O'Sullivan, of Merton Burglary Squad, said: "This new piece of CCTV is crucial in the identification of one of the outstanding suspects, and we are calling to anyone who recognises this man to come forward.
"It is my firm belief that this man and his other outstanding associate would have been stained with blood spatter from the violent attack inside the house.
"Both were also wearing white surgical gloves when they fled. Whilst they attempted a quick exit, I'm sure that members of the public would have seen them.
"The victim currently remains in hospital and is awaiting surgery to an extreme eye injury which has lead to the fracture of his socket.
"The level of violence used is unprecedented for this borough and we believe that the motive for this horrendous crime is purely for financial gain, and the attackers thought there was cash within the property.
"We continue to appeal for information regarding a silver car the suspects may have used."
A 'blood-spattered panicked man' seen removing gloves near crime scene sought by police
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