Comparison of Intraocular Pressure and Pachymeter Measurements Obtained by Non Contact Tonometerpachymeter with Goldmann Applanation Tonometer and Corneal Topography

Abstract

Purpose: To compare the measurements of intraocular pressure (IOP) and central corneal thickness (CCT) by tono-pachymeter (CT-1P) with IOP measurements by Goldmann applanation tonometer (GAT), and CCT measurements by Pentacam. Materials and Methods: Two hundred eighteen eyes of 109 patients were included in the study. Intraocular pressure measurements were obtained by the CT-1P and GAT, whereas CCT measurements were obtained by CT-1P and Pentacam. Blant-Altman plots for agreement, and Pearson correlation and interclass correlation (ICC) for reliability between the measurements were analyzed. Results: The mean IOPCT-1P, IOPCT-1P adj., IOPGAT were measured as 18.2±4.32 mmHg, 17.75±4.05 mmHg and 16.9±4.16 mmHg, respectively. The mean CCT was measured as 554.8±37.3 μm and 543.6±35.9 μm with CT-1P and Pentacam, respectively. Mean differences between devices were signifi cantly different in terms of IOP and CCT measurement (p