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The little device for which I have dared to coin the terrible word " Autofundoscope," is a very simple bit of mechanism, designed to slowly and accurately revolve a pin-hole through, and placed about two millimeters from, the center of a black rubber disc. The word should have been autoretinoscope, but as retinoscopy has been given another signification, autofundoscope is the only word left to designate the observation of the vascular system of one's own retina. The method essentially is the very old one described in books on physiologic optics of moving a pin-perforated card, held in the hand, before the eye, and observing an illuminated blank space through the perforation. In this way, however, one secures only faint, movable and indefinite images of the retinal vessels, which disappear and reappear with provoking rapidity. The common newspaper puzzle of revolving concentric alternate circles of black and white rings, when upon stopping
GOULD GM. DEMONSTRATION OF AN "AUTOFUNDOSCOPE.". JAMA. 1898;XXXI(16):911–912. doi:10.1001/jama.1898.92450160030002j
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