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The purpose of this study was to determine the accuracy, validity, and efficiency of three auto-refractors. The accuracy will be determined by comparing the auto-refraction results to the proven gold standard of a subjective refraction. The efficiency of the auto-refraction units will be determined by the time needed to complete the autorefraction. The three types of auto-refractor units include two handheld models, the Nikon Retinomax and the portable Welch Allyn SureSight, and a standard non-mobile (table-top) Topcon unit. Refractive data was collected for 63 subjects so that conclusions on the accuracy, validity, and efficiency the three auto-refractors can be made.
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http://hdl.handle.net/2323/4060
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Note
This paper is submitted in partial fulfillment of the requirements for the degree of Doctor of Optometry. 12 pages.
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