Unilateral rotary nystagmus / Alexander Duane.

  • Duane, A. (Alexander), 1858-1926.
Date:
[1906]
Catalogue details

Licence: In copyright

Credit: Unilateral rotary nystagmus / Alexander Duane. Source: Wellcome Collection.

Provider: This material has been provided by UCL Library Services. The original may be consulted at UCL (University College London)

    1/4
    ITNILATEEAL EOTARY NYSTAGMUS.- Alexander Duane, M.D. NEW YORK. The following case is reported on account of its rarity: Mrs, < 0. B. A., aged 24, first seen May 10, 1906. For several years, but ■.especially during the past few months, has noticed that at times : she sees double (one object rising vertically out of the other) and t that the objects she is looking at appear to dance up and down. Has also noticed when looking in a glass that the left eye oscillates. : Six years ago had a suppurating gland in the neck which was re- ! moved two years later. Typhoid fever three years ago. Has other- ' wise been perfectly well. Both eyes normal exteriorly. Fundi normal, except that in both,. 1 but especially in the left eye are groups of punctate brown or black- : ish dots in close relation with the retinal vessels. No atrophy of ; adjoining chorioid or retina and interior otherwise normal, although 1 details of left fundus are somewhat blurred by the nystagmus. Vision, 15/15 each; under homatropin shows for far distance, E. + 0.50 + 0.35 cyl. 155°; L. + 0.50 + 0.25 cyl. 40°. Fields ; and color fields, pupils and pupillary reactions normal. Excursions of eyes normal in all directions, but converging power is weak (convergence nearpoint 6 inches from root of nose). Ten- ' dency to slight vertical diplopia in various parts of the field of fixation, but this is evidently due, not to paresis of any of the I ocular muscles, but to the nystagmus. That is, the only way in which she sees double is that an object looked at will suddenly • separate into two images which then rhythmically unite and sepa- rate again. • ISead before the American Ophthalmologlcal Society, June, 1906.