Programm                 "Degeneration und Regeneration– Grundlagen, Diagnostik und Therapie"


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Abstract
Abstract

Non-Contact- and Applanation-Tonometry in Comparison to the New Impressions-Tonometer, the Tono-Scan

Stuebiger N.1,2, Hammer U.2, Deuter C. M. E.1, Landenberger H.1, Schlote T.1, Specht H.3
1Department of Ophthalmology I, University of Tuebingen; 2Department of Ophthalmic Optics, University of Applied Sciences, Aalen; 3Department of Ophthalmology, University of Heidelberg

Purpose: Glaucoma is the leading cause of irreversible blindness worldwide. Therefore measurement of intraocular pressure (IOP) plays an important role in the detection and management of glaucomatous conditions.
Method: The main objective of our study was to find out how well two tonometers (noncontact tonometer CT-20D and TonoScan TGDc-01) compare with the Goldmann tonometer. A total of 59 healthy volunteers (118 eyes) were measured. The mean age was 33.2 years. An average of three intraocular pressure measurements, generated by the CT-20D and an average of nine intraocular pressure measurements generated by the TonoScan were compared with a single reading from Goldmann applanation tonometer. Both eyes were measured using the noncontact tonometer first, TonoScan second and the Goldmann applanation tonometer third.
Results: The mean IOP and the standard deviation of the TonoScan measurements was 16.9 mmHg ± 4.9 in the right eyes, 15.9 mmHg ± 4.9 in the left eyes. The noncontact tonometer measured an average IOP of 15.8 mmHg ± 3.2 in the right and 15.3 ± 3.2 in the left eyes. The mean


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