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Article
May 1932

DIPLOPIA

Arch Ophthalmol. 1932;7(5):786. doi:10.1001/archopht.1932.00820120138013

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Abstract

To the Editor.—In the article on "Diplopia and Other Disorders of Binocular Projection" by the late Dr. Duane in the February issue of the Archives of Ophthalmology (7: 187, 1932), should not the phrase on page 191, line 2 from the bottom, read, "10 degrees below the point" instead of as given "10 degrees above the point"? There is also, it seems to me, some difficulty in following the discussion on the torsional diplopia because the definitions are not given fully.

From a careful analysis, it seems that Dr. Duane calls "intorsional diplopia, DI," an intorsion of the lower parts of the vertical images, that is, the projected images converge below like the two limbs of the letter V. Similarly, he calls "extorsional diplopia, DE," an extorsion of the lower parts of the vertical images, that is, the projected vertical images diverge below like the two limbs of the letter

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