Kwykyti Kayapo, 63, wears sunglasses days after his cataract surgery during a medical expedition by the "Expedicionarios da Saude" (Brazilian Health Expeditions) in the Kikretum community in Sao Felix, northern Brazil April 28, 2011. The "Expedicionarios da Saude" is currently on a medical expedition to the area. Twice a year, volunteer doctors would build a mobile hospital to provide clinical and surgical treatments for indigenous tribes and residents from different parts of the Amazonian Rainforest. REUTERS/Ricardo Moraes (BRAZIL - Tags: HEALTH SOCIETY HEADSHOT)