New Study Demonstrates the Clinical Utility and Accuracy of the SVOne Autorefractor for Measuring Refractive Error

Source: Smart Vision Labs

Smart Vision Labs announced the release of new data on its SVOne autorefractor being published in a leading peer-reviewed publication. In a study led by Kenneth J. Ciuffreda, OD, PhD, FAAO, FCOVD-A, FARVO, and Mark Rosenfield, MCOptom, PhD, FAAO, the smartphone-based SVOne aberrometer was shown to be comparable with subjective refraction and an office-based autorefractor when measuring refractive error under both cycloplegic and non-cycloplegic conditions in visually normal young adults. The researchers heralded the SVOne as valuable for examinations taking place both inside and outside the clinical setting, according to the news release.

“We are excited to see the results of this well-designed study because they help to validate the SVOne as a new clinical tool in our armamentarium for detecting refractive error in healthy eyes,” Dr. Ciuffreda said in the news release. “The smartphone-based SVOne literally puts the power to examine vision in the hands of the clinician. This can facilitate the ability to check vision both inside and outside the clinical setting, thereby addressing the need to expand the availability, efficiency, and accessibility of vision exams, for example in school screenings as well as underdeveloped and third-world countries.”

The SVOne, an FDA Class 1 exempt medical device, utilizes the iPhone’s computing power and camera to perform wavefront aberrometry and obtain the patient’s refractive error. In the published clinical testing, the spherical equivalent refractive findings measured with the SVOne were highly correlated with those obtained using subjective refraction (R = 0.96) in a sample of 50 subjects. Further, the findings for the SVOne were not significantly different from the other objective and subjective techniques tested.

“The SVOne changes the autorefraction paradigm,” Bernard Spier, MD, FAAO, an ophthalmologist in New Jersey who has been using the SVOne for both clinical and overseas work, said in the news release. “We have been performing subjective refraction in the clinic for years. What SVOne and other autorefractors offer is an objective measure of refractive error, which is thus less prone to investigator bias or error. What makes SVOne different, however, is its accessibility and affordability compared with an office-based platform.”

The results of the study are available at https://bit.ly/EvaluationOfTheSVOne and will be published in the December issue of Optometry and Vision Science-the Journal of the American Academy of Optometry.

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