Research Article
Novel Method of Remotely Monitoring the Face-Device Distance and Face Illuminance Using Mobile Devices: A Pilot Study
Figure 3
Bland-Altman plots of differences between observed and actual face-device vergence after calibration at 60 cm (a) and 200 cm (b). Black line represents the mean value and grey lines the 5th and 95th percentiles of the difference distributions.
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| (b) |