Rechargeable battery belt. For use with the indirect ophthalmoscope.
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چکیده
منابع مشابه
Rechargeable battery belt. For use with the indirect ophthalmoscope.
A rechargeable battery is a convenient form of providing power for an indirect ophthalmoscope when conducting a ward round in a retinal unit, and disposes of the need for connexion to a mains supply at each bedside. Nickel-cadmium cells are widely used in industry and are admirably suited to the supply of power to ophthalmoscopes because of their almost constant voltage during discharge. The li...
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The optical principles of indirect ophthalmoscopy were mastered by Gullstrand (I 9 I I) although his ophthalmoscope did not achieve wide popularity because of its complexity and limited field of view. Schepens (I947) demonstrated his binocular indirect ophthalmoscope 2I years ago in the United States of America. The instrument described here is a further stage in simplification (Figs I and 2). ...
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We have constructed a new indirect ophthalmoscope. This instrument has a T-shaped housing composed of an illuminating tube and a viewing tube. A fiberoptic light source provides illumination. The inverted aerial image of the fundus coincides with the plane of the viewing window of the housing. This unit can be easily connected to a television camera for television ophthalmoscopy or to an image ...
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ژورنال
عنوان ژورنال: British Journal of Ophthalmology
سال: 1970
ISSN: 0007-1161
DOI: 10.1136/bjo.54.1.69