title: Refraction in childhood.
mesh_terms: D000550:Amblyopia / Q000628:therapy; D001251:Astigmatism / Q000628:therapy; D002675:Child, Preschool; D005139:Eyeglasses; D006801:Humans; D006956:Hyperopia / Q000628:therapy; D007223:Infant; D008403:Mass Screening; D009184:Mydriatics; D009216:Myopia / Q000628:therapy; D012029:Refraction, Ocular; D012030:Refractive Errors / Q000175:diagnosis* / Q000517:prevention & control; D013285:Strabismus / Q000628:therapy
chemical_list: D009184:Mydriatics