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To the Editor:
—In January 1938 Dr. Alfred Bielschowsky, then director of the Dartmouth Eye Institute, delivered ten lectures before the Los Angeles Research Study Club on motor anomalies of the eyes. The eighth and ninth lectures had previously been published in this journal (Lectures on Motor Anomalies of the Eyes: II. Paralysis of Individual Eye Muscles, Arch. Ophth.13:33 [Jan.]; IV. Functional Neuroses : Etiology, Prognosis and Treatment of Ocular Paralysis, ibid. 13: 751 [May] 1935). Most of this material is republished in the November 1944 issue of the Archives, page 372, as the text for a paper by Dr. William Thornwall Davis, entitled "Paresis of Right Superior Oblique and of Left Superior Rectus Muscle : Differential Diagnosis."In this country ophthalmologists with few exceptions have accepted the views of Dr. Alexander Duane concerning the differential diagnosis of vertical motor anomalies. His opinions have been popularized by Dr. James W.
Smith JW. PARESIS OF RIGHT SUPERIOR OBLIQUE AND OF LEFT SUPERIOR RECTUS MUSCLE: DIFFERENTIAL DIAGNOSIS. Arch Ophthalmol. 1945;33(1):77. doi:10.1001/archopht.1945.00890130093015