The Ophthalmoscope: Helmholtz’s Augenspiegel

  title={The Ophthalmoscope: Helmholtz’s Augenspiegel},
  author={John Malcolm Pearce},
  journal={European Neurology},
  pages={244 - 249}
  • J. Pearce
  • Published 31 January 2009
  • Medicine
  • European Neurology
The origins of Helmholtz’s invention of the ophthalmoscope are found in the ancient observation that the back of the eye appeared black. In 1703, Jean Méry reported that the luminosity of the cat’s eye could be seen when the animal was held under water, and Mariotte observed that a dog’s eye was luminous but erroneously thought this was because its choroid was white. Prévost made a breakthrough when he deduced it was incident light and not light coming out of the eye. Purkinje and von Brücke… 

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