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S. S. Block, K. Harris, J. L. H. Harris, J. O'Brien, A. J. Ottaviano; Comparison of the PediaVision Vision Screener to the Nikon Retinomax in a Population of School Aged Children With Intellectual Disability. Invest. Ophthalmol. Vis. Sci. 2009;50(13):3989.
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The purpose of the study was to compare the PediaVision to the Nikon Retinomax in a population of school aged children with intellectual or developmental disabilities (ID) in a screening setting.
The Nikon Retinomas is the standard autorefractor used in the Special Olympics Lions Clubs International Opening Eyes Vision Program. It has been shown to be valid and reliable in the hands of non-eye care providers. PediaVision is a new screening tool for refractive error and abnormal eye posture. It was compared to the Retinomax on both testability and correlation of spherical equivalent of the right eye.
140 subjects from the Chicago Public Schools presented to be screened. The screening included a comprehensive battery of tests which included autoretraction. Nikon Retinomax was administered first then the PediaVision rather than in a random presentation. 108 subjects completed both tests, 4 subjects were untestable on both instruments. Of the remaining subjects, 4 were able to be tested on either the Retinomax or the PediaVision and 2 athletes were testable on only 1 eye or all but one eye. Paired samples test of spherical equivalent in the OD was 0.637, p<.000. Bland-Altman plot of comparing the techniques will show the moderate correlation with the PediaVision reading more hyperopic or less myopic than the Nikon Retinomax..
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