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It is sometimes necessary to test the near vision of children and analphabets. For this Löhlein has devised three plates with pictures, Snellen's hooks and Landolt's rings. The plates are excellently printed in dull black on opaque heavy white paper, and are suitably contained in a pocket folder.
K. A. Bildersehprobe für die Nähe. Arch Ophthalmol. 1932;8(6):951. doi:10.1001/archopht.1932.00820190171021
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