A French eye surgeon performs an operation on a patient with a detached retina (retinal detachment surgery) in an operating room at the Ambroise Pare hospital in Marseille, on April 3, 2008. REUTERS/Jean-Paul Pelissier (FRANCE) 

French eye surgeons prepare to perform an operation on a patient with a detached retina (retinal detachment surgery) in an operating room at the Ambroise Pare hospital in Marseille, on April 3, 2008. REUTERS/Jean-Paul Pelissier (FRANCE) 

French eye surgeons perform an operation on a patient with a detached retina (retinal detachment surgery) in an operating room at the Ambroise Pare hospital in Marseille, on April 3, 2008. REUTERS/Jean-Paul Pelissier (FRANCE) 

French eye surgeons perform an operation on a patient with a detached retina (retinal detachment surgery) in an operating room at the Ambroise Pare hospital in Marseille, on April 3, 2008. REUTERS/Jean-Paul Pelissier (FRANCE) 

French eye surgeons perform an operation on a patient with a detached retina (retinal detachment surgery) in an operating room at the Ambroise Pare hospital in Marseille, on April 3, 2008. REUTERS/Jean-Paul Pelissier (FRANCE) 

A French eye surgeon uses a microscope as he performs an operation on a patient with a detached retina (retinal detachment surgery) in an operating room at the Ambroise Pare hospital in Marseille, on April 3, 2008. REUTERS/Jean-Paul Pelissier (FRANCE) 

A French eye surgeon performs an operation on a patient with a detached retina (retinal detachment surgery) in an operating room at the Ambroise Pare hospital in Marseille, on April 3, 2008. REUTERS/Jean-Paul Pelissier (FRANCE) 

French eye surgeons perform an operation on a patient with a detached retina (retinal detachment surgery) in an operating room at the Ambroise Pare hospital in Marseille, on April 3, 2008. REUTERS/Jean-Paul Pelissier (FRANCE) 

A French eye surgeon performs an operation on a patient with a detached retina (retinal detachment surgery) in an operating room at the Ambroise Pare hospital in Marseille, on April 3, 2008. REUTERS/Jean-Paul Pelissier (FRANCE) 

French eye surgeons perform an operation on a patient with a detached retina (retinal detachment surgery) in an operating room at the Ambroise Pare hospital in Marseille, on April 3, 2008. REUTERS/Jean-Paul Pelissier (FRANCE) 

French eye surgeons prepare to perform an operation on a patient with a detached retina (retinal detachment surgery) in an operating room at the Ambroise Pare hospital in Marseille, on April 3, 2008. REUTERS/Jean-Paul Pelissier (FRANCE) 

French eye surgeons perform an operation on a patient with a detached retina (retinal detachment surgery) in an operating room at the Ambroise Pare hospital in Marseille, on April 3, 2008. REUTERS/Jean-Paul Pelissier (FRANCE) 

French eye surgeons perform an operation on a patient with a detached retina (retinal detachment surgery) in an operating room at the Ambroise Pare hospital in Marseille, on April 3, 2008. REUTERS/Jean-Paul Pelissier (FRANCE) 

A nurse prepare a patient with a detached retina (retinal detachment surgery) for an eye operation at the Ambroise Pare hospital in Marseille, on April 3, 2008. REUTERS/Jean-Paul Pelissier (FRANCE)