Clinical evaluation of the Shin-Nippon SRW-5000 autorefractor in children.
The Canon Autoref R-1 is an 'open-field' autorefractor which has been widely used for research purposes for the past 20 years, but is no longer manufactured. A new autorefractor, the Shin-Nippon SRW-5000, is now available, and if measures using this instrument are shown to be equally accurate and reliable, is likely to replace the R-1. Here we report on the accuracy and reliability (repeatability and reproducibility) of refraction measures in a paediatric population (from 4 to 8 years of age). Subject numbers were 44 for cycloplegic measures and 53 for non-cycloplegic measures. As would be expected, agreement with cycloplegic refraction and reliability were better when SRW-5000 measures were taken using cycloplegia. Repeatability results from the SRW-5000 autorefractor, both with and without cycloplegia were similar to those reported for the Canon R-1.
Chat
S W
SW
Centre for Myopia Research, Department of Optometry and Radiography, Hong Kong Polytechnic University, Hung Hom, Hong Kong.
Edwards
M H
MH
D000065:Accommodation, Ocular / Q000187:drug effects / Q000502:physiology; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008297:Male; D009184:Mydriatics; D009885:Ophthalmology / Q000295:instrumentation*; D012029:Refraction, Ocular / Q000187:drug effects / Q000502:physiology; D012030:Refractive Errors / Q000175:diagnosis*; D015203:Reproducibility of Results; D015351:Vision Screening / Q000295:instrumentation* / Q000592:standards*
D009184:Mydriatics