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K. Schirmer, MD; M. Shea, MD

Arch Ophthalmol. 1970;83(5):529-532.

Abstract
Prismatic inverters are used to erect the inverted image of indirect ophthalmoscopy. Binocular and monocular indirect ophthalmoscopes can be equally well adapted to yield upright imagery. The inverter fits only to the central area of field that is congruous with the handheld lens. With the lens in place for indirect ophthalmoscopy, the image and the surrounding field yield upright imagery.

Author Affiliations
Montreal; Toronto

From the Department of Ophthalmology, St. Mary's Hospital and McGill University, Montreal (Dr. Schirmer), and the Department of Ophthalmology, St. Michael's Hospital and the University of Toronto, Toronto (Dr. Shea).

Footnotes
Submitted for publication June 18, 1969.

Reprint requests to 5300 Cote des Neiges, Montreal (Dr. Schirmer).

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