ArticleClinical ophthalmology (Auckland, N.Z.)2019
Accuracy, speed and repeatability of the voice assisted subjective refractor (VASR).
Article in Clinical ophthalmology (Auckland, N.Z.), 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
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Who cites it
3 citing papers in PubMed.
- Article
- Assessment of an algorithm-based combination device for objective and subjective refraction: accuracy and efficiency across examiner experience levels.Journal of optometryArticle
- Optometrist-guided versus self-driven subjective refraction using tunable optics: quantifying the professional's impact.Journal of optometryArticle
Corrections and comments
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Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeTo compare the accuracy, speed and repeatability of the voice assisted subjective refractor (VASR) to traditional refractive methods.
methodsFifty healthy adult subjects were examined by autorefractor, followed by subjective phoropter refinement. Subjects were then evaluated using the VASR (Vmax Vision) to obtain an objective and subjective result. Three total assessments were performed for each subject using each of the methods described. Corrected visual acuity was recorded for each eye after each procedure. The total time was measured for both the traditional and VASR refraction.
resultsA comparison of the results obtained by traditional refraction and VASR revealed no statistically significant difference from the mean in equivalent sphere measurements (
conclusionRefractive error results obtained with the VASR were not statistically different from those achieved using traditional phoropter methods. Time elapsed for the VASR was slightly longer than a more traditional refractive sequence. The VASR demonstrated clinically and statistically significant repeatability of measurement, consistent with traditional refraction.
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