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In the communication by Major H. S. Sugar in the March issue (Arch. Ophth.31: 269, 1944) in the twelfth line of the second column, "for each 8 mm." should read "for each of the 8 mm."
CORRECTION. Arch Ophthalmol. 1944;31(4):339. doi:10.1001/archopht.1944.00890040077020
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