Free medical eye camps in Sylhet, Bangladesh, for many years running. Not only are entire villages invited to be checked up for free, whoever is completely blind is given a free cataract surgery. They pay nothing. All surgeries are crowd funded by YOU! If they have any other ailments, medicine is also provided free of cost.
To run one eye camp it costs an equivalent to £1500
and to to give someone the gift of sight via cataract surgery only £30!