Clinical evaluation of a range of autorefractors.
A practice-based study of nine autorefractors was undertaken to assess reliability and validity. Various statistical methods were used to test aspects of validity of the machines compared with one another. In routine optometric practice the autorefractor is shown to be a useful complement to existing techniques, but there is a measurable difference in the performance of machines from different manufacturers, and even between two models from the same manufacturer.
McCaghrey
G E
GE
Section of Epidemiology, Institute of Cancer Research, Belmont, Sutton, Surrey, UK.
Matthews
F E
FE
D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009907:Optometry / Q000295:instrumentation*; D012029:Refraction, Ocular; D012030:Refractive Errors / Q000175:diagnosis