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. 2021 May 11;12(6):3282–3295. doi: 10.1364/BOE.420334

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Fig. 2. — Screenshot of GUI. Objective sphero-cylindrical refraction (bottom right), and Zernike coefficient values and wavefront maps (top right) are displayed in real time. The pupil monitoring window (top center-right) assists the operator in positioning the subject in the correct measurement plane. The operator can modify the measurement pupil radius and other HS processing parameters (bottom center). Visualization of the unprocessed HS image (top center-left) and histograms (bottom left) helps avoiding corneal reflections.