Clinical performance of the Reichert AT550: a new non-contact tonometer.
Ophthalmic Physiol Opt
; 22(6): 560-4, 2002 Nov.
Article
em En
| MEDLINE
| ID: mdl-12477021
ABSTRACT
The aim of the present study was to assess the level of accuracy for measurements of intra-ocular pressure (IOP) obtained with a new non-contact tonometer (NCT) the Reichert AT550. Measurements were compared against those obtained with the Reichert Xpert Plus, Goldmann applanation tonometer and Perkins tonometer. Thirty-five university students were assessed with the four tonometers in a randomised order, with non-contact tonometry performed first. Each of the four measurement devices had its own trained clinical observer. Plots of differences of IOP as a function of the mean for each pair of instruments were obtained. No statistically significant differences were found when comparing the AT550 NCT with contact applanation tonometry (AT) (p> 0.05), displaying the closest level of agreement (as represented by the lowest mean difference and the narrowest confidence interval) with the Goldmann tonometer (limits of agreement, 0.12+/-2.17). In conclusion, readings of IOP with the AT550 NCT are clinically comparable with those obtained with Goldmann tonometry in a population with IOP within the normal range.
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Base de dados:
MEDLINE
Assunto principal:
Tonometria Ocular
/
Pressão Intraocular
Idioma:
En
Ano de publicação:
2002
Tipo de documento:
Article