The prevention of xerophthalmia.
D001210:Asia, Southeastern; D001766:Blindness / Q000209:etiology; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D014802:Vitamin A Deficiency / Q000517:prevention & control; D014985:Xerophthalmia / Q000150:complications / Q000517:prevention & control*