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Optom Vis Sci. 1989 Sep;66(9):643-6.

Kalt, keratoconus, and the contact lens.

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  • 1Department of Optometry and Visual Science, City University, London, United Kingdom.


A complete English translation is presented of the communication given in 1888 by Professor Photinos Panas in which he reported the innovative use by his junior colleague, Dr. Eugène Kalt, of a contact shell in a case of keratoconus. The patient showed a dramatic visual improvement but tolerance of the shell was limited to a few hours. A biography of Kalt is included, together with a number of explanatory notes.

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