Tonometry involves diagnostic testing to measure the pressure inside the eye or intraocular pressure (IOP). Glaucoma is a silent disease that causes irreversible functional peripheral visual field loss that can ultimately lead to blindness in the very late stages of the disease if not treated. Tonom...

Objective We aimed to compare intraocular pressure (IOP) measurements via three different tonometers: the Goldmann applanation tonometer (GAT), the Tono-Pen® XL (TPXL), and a non-contact airpuff tonometer (NCT). Methods This was a cross-sectional study of 200 eyes from 200 patients. Right eye...

Interindividual variability of central corneal thickness has been found to be a source of error for conventional Goldmann applanation tonometry. The dynamic contour tonometer represents a potentially new technology for non-invasive and direct intraocular pressure (IOP) measurement, and has been prop...

Purpose:: To evaluate precision and accuracy of Corvis-ST, a new noncontact tonometer equipped with a high-speed Scheimpflug technology, which measures intraocular pressure (IOP), central corneal thickness (CCT), and corneal deformation parameters (CDPs). Relationships among IOP, CCT, and CDPs were ...

Purpose: To determine the intraexaminer repeatability and intersession reproducibility of corneal deformation measurement using Scheimpflug noncontact tonometry (Corvis ST) on normal subjects. Methods: Thirty-seven adults aged 20 to 48 years were invited to have their corneal deformation and curvatu...