More than 300 million people worldwide are blind or visually impaired and 90% of them are in low income or developing countries. Much of this blindness is avoidable, by adopting simple but effective measures. Operation Eyesight Universal is an international development organization based in Canada - dedicated to preventing avoidable blindness. Global Health TV takes a look at their work.
Links:
Operation Eyesight Universal - http://www.operationeyesight.ca/