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VAL B. FISCHER, M.D.

Arch Ophthal. 1930;3(4):413-418.

	Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings.

The eye has optical errors. But Helmholtz' famous dictum that the monochromatic aberrations of the eye are such as would not be tolerated in any good optical instrument should not, as has been done n some occasions, be taken to condemn the eye in all its functions. For, in some respects, it is far superior to any optical instrument built by man. In the matter of spherical aberration the eye is inferior to many man-made optical instruments, the eye not being made to overcome optically color aberration. It was to this fault, and to nothing else, that Helmholtz had reference when he uttered his famous dictum, so frequently misquoted.

Man-made optical instruments overcome chromatic aberration by the use of lens combinations composed of one convex element of crowned glass, which is more convergent for blue than for red, and another concave element of flint glass, which is more divergent for . . . [Full Text PDF of this Article]

Author Affiliations
BOULDER, COLO.

Footnotes
Submitted for publication, July 18, 1929.

Read before the Section on Pathology and Physiology at the Eightieth Annual Session of the American Medical Association, Portland, Oregon, July 11, 1929.

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