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A Retroactive Study Comparing the Accuracy of the Pediavision Assessment Solution (PAS) Photo-Screener Refraction Capabilities on Special Needs Patients Against Other Refraction Methods

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dc.contributor.author Czinder, Nicholas Scott
dc.date.accessioned 2013-08-05T19:28:17Z
dc.date.available 2013-08-05T19:28:17Z
dc.date.issued 2013-05-06
dc.identifier.uri http://hdl.handle.net/2323/3808
dc.description This paper is submitted in partial fulfillment of the requirements for the degree of Doctor of Optometry. 22 pages en_US
dc.description.abstract Purpose: To compare the PediaVision Assessment Solution (PAS) hand held auto refractor against the Topcon KR-8900 auto refractor and the Canon RK- 3 auto refractor in accuracy in helping to finalize prescriptions during mass screenings of special needs patients. Methods: Special Olympic athletes attending the summer games in Mount Pleasant, Michigan, were given a full comprehensive optometric vision screening over a three-day period. Over 1,000 athletes were given exams and 217 random exams were chosen to compare the accuracy ofthe PediaVision Assessment Solution to the Topcon KR-8900 and Canon RK-3 auto refractors in helping finalize prescriptions. If there were no final prescriptions written because of emmetropia, then those results were not counted. The older prescription was used to compare results if there was no change in the prescription. Three separate areas were evaluated: spherical power, cylinder power and cylinder axis. The pass/fail criteria were set as: +/-1.00 diopter off the final sphere,+/- 0. 75 diopters off the final cylinder power, and +/- 10 degrees off the final axis. Results: Essentially all three auto refractors performed comparably. The PediaVision Assessment Solution had the lowest accuracy compared to the Topcon KR-8900 and the Canon RK-3. All three had low accuracy comparing the cylinder axis; however all three performed better in accuracy of the final cylinder power and sphere power. Conclusion: For large screenings, especially if dealing with a demographic that may not be able to give you reliable responses, it is essential to have multiple ways to evaluaterefractive error. All three devices offer moderately accurate objective prescriptions that can aid in finalizing the spectacle prescription. The PediaVision Assessment Solution however offers additional screening tests that could further assist special needs screenings and help in possibly diagnosing abnormalities that may be otherwise missed. en_US
dc.relation.ispartofseries UA 29;
dc.subject Wrubel, Daniel. Faculty advisor. en_US
dc.title A Retroactive Study Comparing the Accuracy of the Pediavision Assessment Solution (PAS) Photo-Screener Refraction Capabilities on Special Needs Patients Against Other Refraction Methods en_US
dc.type Thesis en_US


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