A fully automated remote refraction system.
Traditional methods of performing refractions depend on a trained refractionist being present with the subject and conducting an interactive form of subjective testing. A fully automated refraction system was installed in 13 optical dispensaries and after 15 months the patient and statistical information was gathered. The data from all operators were consistent and suggested a lack of operator effect on the refraction results. The mean of the SD of subjective sphere measurements was 0.2, or slightly less than a quarter dioptre, which would be an acceptable level of accuracy for ordering corrective lenses. The present study suggests an absence of operator influence on the results of the refractions and a degree of consistency and accuracy compatible with the prescription of lenses.
Dyer
A M
AM
Calgary Regional Health Authority, Department of Ophthalmology, Alberta, Canada. eyelogic@eyelogic.com
Kirk
A H
AH
D006801:Humans; D007909:Lenses; D009885:Ophthalmology / Q000295:instrumentation*; D012030:Refractive Errors / Q000175:diagnosis*; D012044:Regression Analysis; D019114:Remote Consultation / Q000592:standards*