This Article  • References  • Full text PDF  • Reply to article  • Send to a friend  • Save in My Folder  • Save to citation manager  • Permissions  Citing Articles  • Citing articles on HighWire  • Contact me when this article is cited  Related Content  • Similar articles in this journal  Social Bookmarking   What's this?

PETER C. KRONFELD, M.D.; CLARISSA DEVNEY, M.D.

Arch Ophthal. 1930;4(6):873-884.

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

Since the introduction of the ophthalmometer into clinical ophthalmology, many authors have studied the variations of the curvature of the cornea. Steiger, who was the first to apply statistical methods to this study, found that the variations of the corneal curvature behaved very regularly and followed the law of Gauss. The next logical step was to investigate the distribution of the various degrees of corneal astigmatism over the three main refractive states, emmetropia, myopia and hyperopia. This classification, mainly on Steiger's suggestion that all the refractive states should be considered as physiologic variations of normal refraction, was learned to be an arbitrary procedure which was not justified by any biologic facts. Therefore, the frequency of the various degrees of corneal astigmatism was determined separately for each refractive state. Extensive studies of this type, using skiascopy without cycloplegia and manifests for the determination of axial refraction and then correlating . . . [Full Text PDF of this Article]

Author Affiliations
Associate Professor of Ophthalmology; Research Fellow in Ophthalmology, Douglas Smith Foundation CHICAGO

From the Eye Clinic of the University of Chicago, E. V. L. Brown, Director.

Footnotes
Submitted for publication, June 30, 1930.

Read before the Chicago Ophthalmological Society, May 19. 1930.

CiteULike    Connotea    Del.icio.us    Digg    Reddit    Technorati    Twitter     What's this?