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Retinal images focused just below the nerve fiber layer (450 × 450 pixels) of subject S1 with sampling apertures of (a) Φ7.56 mm and (b) Φ5.4 mm, where the dilated pupil of subject S1 was Φ6.84mm. (c) Spectrum power comparison based on the images within the two 120 × 120 pixels red-frame windows. We can clearly see the image improvement by avoiding the boundary errors.
