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Non-Contact Tonometry Jorge J., González-Méijome J.M., Queirós A. Fernandes P.

Department of Physics (Optometry), School of Sciences, University of Minho, Braga, Portugal.

Purpose: Present the actual state in tonometry with particular emphasis on non-contact tonometry. Methods: We carry out a literature review which is considered the most recent published papers on tonometry, particularly on comparison and validation of new tonometers. Results: The most recent publications were analysed comparing the different types of tonometers with the Goldmann tonometer (considered the “Gold Standard”). The air-puff or noncontact tonometers have improved a great deal since the first models. When compared with the Goldmann tonometer the latest models showed a mean difference of less than 1mmHg. From the either models of tonometers the iCARE is the one that presents the best results when compared with Godmann tonometer. Conclusions: We are now on the verge of a significant progress in non-anaesthetic tonometry. Current non-contact tonometers models can reach values of intraocular pressure similar to those obtained by the Goldmann tonometer.



Free Papers

CIOCV'09 Proceedings  

Proceedings for the International Conference of Optometry and Visual Science 2009 (CIOCV'09). University of Minho, Braga, Portugal