Published on in Vol 21, No 11 (2019): November
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/14808, first published
.
![Validation of an Independent Web-Based Tool for Measuring Visual Acuity and Refractive Error (the Manifest versus Online Refractive Evaluation Trial): Prospective Open-Label Noninferiority Clinical Trial. Validation of an Independent Web-Based Tool for Measuring Visual Acuity and Refractive Error (the Manifest versus Online Refractive Evaluation Trial): Prospective Open-Label Noninferiority Clinical Trial.](https://asset.jmir.pub/assets/bbfa0bb11c286269d12f11da0fb91f3e.png 480w,https://asset.jmir.pub/assets/bbfa0bb11c286269d12f11da0fb91f3e.png 960w,https://asset.jmir.pub/assets/bbfa0bb11c286269d12f11da0fb91f3e.png 1920w,https://asset.jmir.pub/assets/bbfa0bb11c286269d12f11da0fb91f3e.png 2500w)
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