[World Health Day. The prevention of blindness].
D035843:Biomedical Research; D001766:Blindness / Q000517:prevention & control*; D014943:Global Health; D006801:Humans; D007391:International Cooperation; D011634:Public Health; D014141:Trachoma / Q000453:epidemiology*
BLINDNESS/prevention and control; INTERNATIONAL COOPERATION; PUBLIC HEALTH; TRACHOMA/epidemiology