Date of Award


Degree Type


Degree Name

Master of Science in Vision Science

Committee Chair

Paul Kohl


To assess the performance of the Nikon Retinomax, 61 normal eyes were refracted with a Nikon Retinomax, a Nidek AR-1100, static retinoscopy and a subjective refraction. The results of the Nikon Retinomax refractions were compared to the other methods. Compared to subjective refraction, the Retinomax refracted the sphere value to within ± 0.75D for 80% of subjects. The cylinder power (for subjects with cylinder >- 0.75D) was within ± 0.50D for 78% of subjects, and axis was within 15 degrees for 83% of these subjects. Snellen acuities for Retinomax generated refractions were 20/30 or better for 90% of subjects. The largest errors were found on those who where greater than -4.00 D. The Nikon Retinomax was found to be a clinically suitable substitute for retinoscopy and tabletop autorefractors.

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