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  • Title: [Improvement of visual acuity in lens opacities using an optic aperture (author's transl)].
    Author: Hilz R, Ucke C.
    Journal: Klin Monbl Augenheilkd; 1975 Jul; 167(1):117-8. PubMed ID: 1202261.
    Abstract:
    A diaphragm, placed in front of the eye acts as an artificial pupil as well as a field stop. The improvement of visual performance in the presence of opacities is due to its action as a field stop.
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