منابع مشابه
Re-evaluation of the Schiotz tonometer calibration.
The calibration scale for the Schi0tz tonometers toas tested by comparing Goldmann applanation and Schi0tz measurements on the eyes of 906 patients. The study differed from several previous studies in that both the applanation and Schi0tz measurements were made with the subjects lying on their backs, thus eliminating errors due to change in intraocular pressure as the subject changed from one p...
متن کاملUnderstanding and caring for a Schiotz tonometer
A Schiotz tonometer is an instrument for measuring the intraocular pressure (IOP). Although the Schiotz tonometer does not make as precise measurements as other types of tonometers, it is inexpensive, simple to use, durable, requires little maintenance, does not have electronics, does not require batteries, and can be stored for years between uses. These qualities make it well suited for screen...
متن کاملTheory and calibration of the Schiotz tonometer. I. The boundary surface of the cornea.
T JLo -onography as developed by Grant has been useful in both laboratory and clinic in elucidating the mechanisms of aqueous dynamics and of glaucoma and in assessing drug action. Tonography is the direct outgrowth of Friedenwald's" work on calibration of the Schi0tz tonometer. The present series of papers is devoted to a re-examination of some of the basic concepts of indentation tonometry in...
متن کاملTheory and calibration of the Schiotz tonometer. II. The resistance of the cornea to deformation.
.lthough the cornea is very flexible, force must be required to bend it. Goldmann and Schmidt' and Gloster and Perkins following Imbert and Fick have considered bending resistance in applantation tonometry. Friedenwald however, in his studies on Schi0tz tonometry, came to the conclusion that the resistance of the cornea to deformation is negligibly small. The corneal bending forces involved in ...
متن کاملComparison of intraocular pressure measurements using Goldmann tonometer, I-care pro, Tonopen XL, and Schiotz tonometer in patients after Descemet stripping endothelial keratoplasty
PURPOSE Post-Descemet stripping endothelial keratoplasty (DSEK) patients are prone for intraocular pressure (IOP) elevations and glaucoma. Corneal characteristics influence various IOP measuring devices in various ways. The aim of this study was to evaluate the agreement between four different IOP measuring devices: Goldmann applanation tonometer (GAT), I-care pro, Tonopen XL, and Schiotz tonom...
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ژورنال
عنوان ژورنال: British Journal of Ophthalmology
سال: 1917
ISSN: 0007-1161
DOI: 10.1136/bjo.1.6.352