So far applanation tonometry has not worked out any theoretical basis for correcting the result of intraocular pressure measurement carried out on a cornea with noncalibration dimensions by means of the Goldmann tonometer. All the tables of instrument reading corrections for cornea thickness or cornea curvature radius are based exclusively on measurements. This paper represents an attempt at cr...

Background: Glaucoma is the world's leading cause of preventable irreversible blindness. The most important risk factor of glaucoma is increase in the intraocular pressure.Hence, timely screening by accurate IOP measurements is of utmost importance. In recent years, Tonopen has emerged as an alternative to Goldmann applanation tonometer which is the ‘gold standard’ for IOP measurement because o...

Material and Methods: This study was conducted in ophthalmology department PNS Shifa, Karachi. From March 2013 to Jan 2015 for 23 months. A total of 350 glaucoma suspect patients were selected. A detailed history of ocular or systemic diseases was taken. Intraocular pressure (IOP) was measured using Goldmann Applanation tonometer. Optical Coherence Tomography (OCT) images were taken using Heide...

BACKGROUND Compare Goldmann applanation tonometer (GAT) prism and correcting applanation tonometry surface (CATS) prism to intracameral intraocular pressure (IOP), in vivo and in vitro. METHODS Pressure transducer intracameral IOP was measured on fifty-eight (58) eyes undergoing cataract surgery and the IOP was modulated manometrically to 10, 20, and 40 mmHg. Simultaneously, IOP was measured ...

Goldmann applanation tonometer (GAT) has been the gold standard for intraocular pressure (IOP) measurement for over five decades. However, the last few years have seen lots of research in an effort to develop the ultimate tonometer. One of the outcomes of that effort is the rebound tonometer (RBT) (Icare; Tiolat Oy, Helsinki, Finland), which has appeared in clinical practice after extensive res...

Purpose: The accuracy and agreement of intraocular pressure (IOP) measurements using a noncontact self-measuring tonometer, TONO-i, compared with the Goldmann applanation tonometer (GAT).Methods: A total 35 healthy participants 42 primary open angle or normal tension glaucoma patients were enrolled in this study. TONO-i GAT obtained mean difference IOPs was analyzed paired <i>t</i>-...