Blaine is told stunt could cost his sight

David Blaine risks losing his sight if he goes ahead with his latest stunt, a leading medical specialist has warned.

The magician will hang upside down for 60 hours over New York's Central Park without a safety net from Monday.

Chief of vascular surgery at Hackensack University Medical Centre, Massimo Napolitano told WENN: "All the organs pretty much are affected by this. Most importantly the blood rushes to the head.

"There is danger of brain haemorrhage. There is danger of the blood rushing to the eyes and blinding David."

Doctor Richard Ruden, who has worked with Blaine on a number of stunts, said he is the only human who could survive the test. "It is really important for people to understand that David is not an ordinary man. It is David's choice to endure superhuman stress. If he can accomplish this, we might have to change his name to 'He Who Hangs With Bats'," he said.

Earlier this year, the magician broke the world record for holding his breath underwater when he remained in a water-filled sphere for 17 minutes and four seconds live on The Oprah Winfrey Show.