Seeing is believing.
Arnold
S
S
D000328:Adult; D002188:Cannabis; D004335:Drug and Narcotic Control / Q000331:legislation & jurisprudence; D005260:Female; D006801:Humans; D012174:Retinitis Pigmentosa / Q000188:drug therapy*; D006113:United Kingdom; D014785:Vision, Ocular / Q000187:drug effects*