Rebound, Applanation, and Dynamic Contour Tonometry in Pathologic Corneas

• DOI: 10.1097/ico.0b013e318254a3fb
• Publication Date: 2012-06-06T10:50:06Z
• Authors: André Rosentreter; Apostolos Athanas...; Andrea M. Schild; Alexandra Lappas; Claus Cursiefen; Thomas S. Dietlein
• Keywords: Goldmann Applanation Tonometer

To compare the practicability of using an Icare rebound tonometer (RT) versus a Goldmann applanation (GAT) or Pascal dynamic contour (DCT) for measuring intraocular pressure (IOP) in patients with corneal abnormalities and, furthermore, to study influence central thickness, diameter, radius, and axial length.One hundred seventy-one pathologic eyes 26 nonpathologic control 99 were included. Pathologic corneas divided into subgroups: previous keratoplasty, keratoconus, scars, dystrophies, bullous keratopathy.Although IOP was successfully measured RT all eyes, successful measurement only possible 98.2% when GAT 73.1% DCT. Mean enrolled 12.7 ± 4.1 mm Hg RT, 15.5 4.4 GAT, 16.3 The mean difference between ≤ 1 (≤ 2 Hg) [≤ 3 Hg] 23.4% (41.8%) [62.0%] cases. Correlation analysis showed moderate correlation (r = 0.566; P < 0.001) DCT 0.364; 0.001). Bland-Altman revealed bias -2.8 -3.8 Hg, limits agreement -10.5 4.9 -12.2 4.6 respectively.In corneas, difficult obtain DCT, whereas able determine corneas. significantly underestimated groups relation methods clinically acceptable dystrophy keratoconus but poor after keratoplasty.