Prevention of blindness from adverse reactions to drugs.
D001766:Blindness / Q000139:chemically induced* / Q000517:prevention & control; D002738:Chloroquine / Q000009:adverse effects; D004341:Drug Evaluation; D006801:Humans; D007049:Iatrogenic Disease; D011217:Practolol / Q000009:adverse effects; D013997:Time Factors
D002738:Chloroquine; D011217:Practolol