title: An automatic objective optometer. Description and clinical evaluation.
abstract: Automatic objective optometers provide a possible alternative to conventional clinical methods of refracting the human eye. Quantitative evaluation of one of these instruments (Dioptron), including a comparison between optometer and subjective refractions, was undertaken to determine how automatic optometers may be utilized most effectively in clinical situations. The results show a high degree of instrument validity and reliability. The conclusion is that the Dioptron has substantial promise as a means of estimating ametropia-as a replacement for retinoscopy and for screening or monitoring ametropia. However, the use of this instrument as a substitute for subjective refraction procedures does not seem warranted at this time.
mesh_terms: D000328:Adult; D001331:Automation / Q000295:instrumentation; D003936:Diagnosis, Computer-Assisted; D005069:Evaluation Studies as Topic; D006801:Humans; D008875:Middle Aged; D009907:Optometry / Q000295:instrumentation*; D012029:Refraction, Ocular; D012030:Refractive Errors / Q000175:diagnosis; D013223:Statistics as Topic