A nurse walks out of an operating theatre of the flying eye hospital which is stationed on the tarmac of an international airport in Mumbai April 2, 2007. The world's only flying eye hospital is on a two-week mission to India to perform free surgeries and train hundreds of eye care personnel in a country that has the world's largest blind population. Picture taken on April 2, 2007. REUTERS/Punit Paranjpe (INDIA)