Opthalmometer

Opthalmometer

Usage conditions apply
Downloads
Description
An ophthalmometer (aka keratometer) measures the curvature of the anterior surface of the cornea, and so is used to assess the extent and axis of astigmatism. The German physiologist Hermann von Helmholtz introduced the form in 1851. The “F. A. HARDY & CO. / MAKERS / CHICAGO" inscription on this example refers to an optical and medical supply house that was established in 1884.
Location
Currently not on view
Object Name
Opthalmometer
Other Terms
Opthalmometer; Medicine
maker
F.A. Hardy
Physical Description
iron; brass; paint; fabric; wire (overall material)
Measurements
overall: 59.5 cm x 22.5 cm x 49.3 cm x 41 cm; 23 7/16 in x 8 7/8 in x 19 7/16 in x 16 1/8 in
ID Number
MG.M-07025
catalog number
M-07025
216897.02
accession number
216897
Credit Line
Gift of Dr. J. Staiman
See more items in
Medicine and Science: Medicine
Data Source
National Museum of American History
Nominate this object for photography.   

Our collection database is a work in progress. We may update this record based on further research and review. Learn more about our approach to sharing our collection online.

If you would like to know how you can use content on this page, see the Smithsonian's Terms of Use. If you need to request an image for publication or other use, please visit Rights and Reproductions.

Comments

Add a comment about this object