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Clinical evaluation of a range of autorefractors
Author(s) -
McCaghrey G. E.,
Matthews F. E.
Publication year - 1993
Publication title -
ophthalmic and physiological optics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.147
H-Index - 66
eISSN - 1475-1313
pISSN - 0275-5408
DOI - 10.1111/j.1475-1313.1993.tb00441.x
Subject(s) - autorefractor , reliability (semiconductor) , complement (music) , range (aeronautics) , computer science , test (biology) , optometry , validity , medical physics , psychology , reliability engineering , statistics , medicine , psychometrics , mathematics , visual acuity , engineering , refractive error , ophthalmology , aerospace engineering , chemistry , biology , paleontology , power (physics) , biochemistry , quantum mechanics , physics , complementation , gene , phenotype
A practice‐based study of nine autorefractors was undertaken lo 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 lo 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.