The American journal of the medical sciences (1827)
[Thorofare, N.J., etc.] Charles B. Slack [etc.] · leaf 413
ced towards or removed from its refracting surface, an ametropia would be produced ; the images formed by the rays passiug through the holes would fall upon it separated from each other in proportion to the departure from the length of the normal axis; and a single point of light, at a distance,… … Listing's Eye, three times enlarged, showing, a. Hypermetropia of JL; b. Myopia of l These considerations lead to the search for some fixed quantity without the eye which shall bear a proportional value to the known measure within it, and the convenience of the metrical system leads me to propose
Medicine
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