Automated refraction.
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D003201:Computers; D004470:Economics, Medical; D006801:Humans; D008875:Middle Aged; D009885:Ophthalmology / Q000295:instrumentation*; D012029:Refraction, Ocular