Reversing blindness

This is a staggering statistic:

75% of blindness and visual impairment could be cured or prevented. The main uncorrected causes are refractive errors, which affect at least 123 million people, and cataracts, which affect 65 million.

More information in the photoessay at The Guardian.

Photo (bilateral cataracts in a young Pakistani laborer) credit Andrew McConnell/Sightsavers.