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—In the article titled "Laser Iridotomy in Closed-Angle Glaucoma," published in the October Archives (97: 1920-1921, 1979), on page 1921, column 2, second complete paragraph, lines 11-12, mannitol hexanitrate should have read simply. mannitol.
CORRECTION. Arch Ophthalmol. 1980;98(1):188. doi:10.1001/archopht.1980.01020030190031