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THE RELATION OF CORNEAL CURVATURES TO THE REFRACTION OF THE EYE.

THE RELATION OF CORNEAL CURVATURES TO THE REFRACTION OF THE EYE. I have included in this report all cases of refraction examined under a cycloplegic that came under my care from December, 1901, to December, 1903. The errors of refraction were estimated in the usual manner with trial lenses. The instrument used in making the corneal measurements was the ophthalmometer of Chambers, Inskeep & Co. On the side of one of the recording wheels the curvature of the corneal meridians can be read off in millimeters. This instrument, so far as I know, is accurate. It does not measure corneal meridians whose radii of curvature are shorter than 6.85 mm., nor of those longer than 9.00 mm. Reference to Table 1 shows that out of 2,092 corneal meridians examined, 1,273 were hypermetropic in refraction, 507 myopic and 312 emmetropic. It was found that the instrument measured all corne that came under my observation, except one case of conical http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png JAMA American Medical Association

THE RELATION OF CORNEAL CURVATURES TO THE REFRACTION OF THE EYE.

JAMA , Volume XLIV (5) – Feb 4, 1905

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Publisher
American Medical Association
Copyright
Copyright © 1905 American Medical Association. All Rights Reserved. Applicable FARS/DFARS Restrictions Apply to Government Use.
ISSN
0098-7484
eISSN
1538-3598
DOI
10.1001/jama.1905.92500320042001g
Publisher site
See Article on Publisher Site

Abstract

I have included in this report all cases of refraction examined under a cycloplegic that came under my care from December, 1901, to December, 1903. The errors of refraction were estimated in the usual manner with trial lenses. The instrument used in making the corneal measurements was the ophthalmometer of Chambers, Inskeep & Co. On the side of one of the recording wheels the curvature of the corneal meridians can be read off in millimeters. This instrument, so far as I know, is accurate. It does not measure corneal meridians whose radii of curvature are shorter than 6.85 mm., nor of those longer than 9.00 mm. Reference to Table 1 shows that out of 2,092 corneal meridians examined, 1,273 were hypermetropic in refraction, 507 myopic and 312 emmetropic. It was found that the instrument measured all corne that came under my observation, except one case of conical

Journal

JAMAAmerican Medical Association

Published: Feb 4, 1905

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