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04/01/1994

Apparent Pupil Displacement. (Articolo in inglese)

With videokeratography, the apparent position of the entrance pupil of some eyes is displaced by up to 0.5 mm from the center of the target ring image or the corneal map. This displacement occurs because of the alignment system and is not affected significantly by the corneal central radius of curvature, peripheral asphericity, or other shape parameters.

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