title: FDA writes warning letter to users of homemade and illegally imported lasers.
authors.forename: G O
authors.initials: GO
authors.lastname: Waring
mesh_terms: D018795:Device Approval / Q000331:legislation & jurisprudence / Q000592:standards*; D006801:Humans; D054018:Lasers, Excimer; D018903:Photorefractive Keratectomy / Q000592:standards*; D014481:United States; D014486:United States Food and Drug Administration / Q000331:legislation & jurisprudence*