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David D. Donaldson, MD

Arch Ophthalmol. 1969;82(6):781-783.

Abstract
In the study of small areas of the fundus as the disc and macula, depth relationships may be of considerable importance. A binocular direct ophthalmoscope has been designed to accomplish such observation with greater simplicity than other techniques. The instrument produces a magnification of 15 times, an excellent stereoscopic effect, and is hand held.

Author Affiliations
Boston

From the Howe Laboratory of Ophthalmology, Harvard Medical School, and the Massachusetts Eye and Ear Infirmary, Boston.

Footnotes
Submitted for publication May 6, 1969.

Reprint requests to 243 Charles St, Boston 02114.

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