. 2019 Nov 8;21(11):e14808. doi: 10.2196/14808
©Robert P L Wisse, Marc B Muijzer, Francesco Cassano, Daniel A Godefrooij, Yves F D M Prevoo, Nienke Soeters. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 08.11.2019.
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Figure 2.
An impression of the online refraction exam and its comparator the manifest refraction.