title: Possibilities and limitations of refraction measurement by an automatic refractor.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D006801:Humans; D008875:Middle Aged; D009885:Ophthalmology / Q000295:instrumentation*; D012029:Refraction, Ocular; D012030:Refractive Errors / Q000175:diagnosis*