This Article  • Full text PDF  • Reply to article  • Send to a friend  • Save in My Folder  • Save to citation manager  • Permissions  Citing Articles  • Citing articles on Web of Science (1)  • Contact me when this article is cited  Related Content  • Similar articles in this journal  Social Bookmarking   What's this?

K. ELIZABETH PIERCE OLMSTED, M.D.

AMA Arch Ophthalmol. 1959;62(3):459-464.

	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 is a sphere-like organ whose encasement is an elastic, tensile, semirigid structure. The problem of measuring the intraocular pressure, therefore, becomes complex owing to these structural characteristics and their variability. If the eye were an inelastic nonrigid structure so that its envelope did not resist distortion, and the tonometer weight were very small so that it displaced practically no volume, Vc, then the weight, W, would simply be supported by the intraocular pressure, P, over the plunger area, A (W=PA) (Fig. 1).

Two methods of measuring this pressure have been employed, the indentation type of Schiøtz, Gradle, and McLean and the aplanation technique of Goldmann.

In any tonometer there is a finite change of volume, Vc, which distends the eye and brings into play elastic tensile forces and a rise in internal pressure from Po, the pressure in the eye before the application tonometer to Pt, the pressure in the eye with the . . . [Full Text PDF of this Article]

Author Affiliations
Buffalo

Footnotes
Submitted for publication Feb. 2, 1959.

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