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In the article by Dr. Benjamin Friedman entitled "Acceptance of Weak Cylinders at Paradoxic Axes," in the April issue (Arch. Ophth. 23: 720, 1940), "18 degrees" in the last line but one on page 724 should read "180 degrees" and "reversing" in the seventh line from the top of page 726 should read "reducing."
CORRECTION. Arch Ophthalmol. 1940;23(5):1093. doi:10.1001/archopht.1940.00860131221018
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