Investigators may be ready to shed new light on the skiing accident that has left seven-time Formula One world champion Michael Schumacher fighting for his life.

French prosecutors looking into the crash that took place 11 days ago are due to hold a press conference at the Palais de Justice in Albertville at 10am GMT on Wednesday.

According to various reports, the authorities have been looking at several factors, including the speed Schumacher had been travelling at the time of the accident as well as whether the boundaries of the ski run next to where he was skiing off-piste were properly marked.

Schumacher's family have given the investigators a camera that the racing driver was wearing on his helmet when he was injured.

The media pack which has assembled since Schumacher's crash has been urged by the German's wife, Corinna, to move away from the hospital where the former Jordan, Benetton, Ferrari and Mercedes driver remains in a critical condition.

Schumacher was admitted to Grenoble University Hospital after hitting his head on a rock in a crash while skiing on a family holiday in the French Alpine resort of Meribel on December 29.

That left him with significant brain injuries and he has since undergone two operations to remove blood clots and reduce swelling.

The 45-year-old is in an artificially induced coma and there has seemingly been little change in his condition since he was described as "critical but stable" a week ago.

The doctors treating the German driver have no further press conferences planned, and Schumacher's wife believes the time has come for the world's media, which has flocked en masse to the hospital, to pack up and go home.

"Please support us in our common fight with Michael," Corinna Schumacher said in a statement. "It is important to me that you leave the doctors and the hospital so that they can work in peace.

"I ask you to trust their statements and leave the clinic. Please leave our family in peace.''

Schumacher retired from F1 for a second time in 2012 after a three-season comeback with Mercedes. He won the last of his seven world titles in 2004 and has 91 career race wins.