Georgios Bontzos1,2, Michail Agiorgiotakis3, Zoi Kapsala4,3, Efstathios Detorakis4,3. 1. Department of Ophthalmology, University Hospital of Heraklion, Heraklion, Crete, Greece. gbontzos@hotmail.gr. 2. Institute of Vision and Optics, University of Crete, Heraklion, Greece. gbontzos@hotmail.gr. 3. Institute of Vision and Optics, University of Crete, Heraklion, Greece. 4. Department of Ophthalmology, University Hospital of Heraklion, Heraklion, Crete, Greece.
Abstract
PURPOSE: The accuracy of contact tonometry may be compromised in cases with disorders affecting central corneal bio-mechanical properties. This study examined the reliability of rebound tonometry (RT) on the area of corneo-scleral limbus, instead of the conventional central corneal area, and the correlation of findings with ocular biometric parameters. METHODS: This is a prospective cross-sectional study performed at the Department of Ophthalmology of the University Hospital of Heraklion, in Crete, Greece. Consecutive cataract surgery candidates without concomitant ocular pathology, apart from cataract, were included. RT was performed on the central cornea (central RT, CRT) as well as on the limbus and scleral spur area (limbal RT, LRT). Findings were correlated with Goldmann applanation tonometry (GAT) as well as axial length (AL), central corneal thickness (CCT), and corneal curvature (CC) measurements. RESULTS: LRT readings were significantly correlated with central CRT as well as with GAT readings, whereas respective correlations with other parameters examined were not statistically significant. CONCLUSIONS: LRT may be used as an alternative tool in clinical practice to determine intraocular pressure when conventional devices and techniques might be inadequate or unreliable.
PURPOSE: The accuracy of contact tonometry may be compromised in cases with disorders affecting central corneal bio-mechanical properties. This study examined the reliability of rebound tonometry (RT) on the area of corneo-scleral limbus, instead of the conventional central corneal area, and the correlation of findings with ocular biometric parameters. METHODS: This is a prospective cross-sectional study performed at the Department of Ophthalmology of the University Hospital of Heraklion, in Crete, Greece. Consecutive cataract surgery candidates without concomitant ocular pathology, apart from cataract, were included. RT was performed on the central cornea (central RT, CRT) as well as on the limbus and scleral spur area (limbal RT, LRT). Findings were correlated with Goldmann applanation tonometry (GAT) as well as axial length (AL), central corneal thickness (CCT), and corneal curvature (CC) measurements. RESULTS: LRT readings were significantly correlated with central CRT as well as with GAT readings, whereas respective correlations with other parameters examined were not statistically significant. CONCLUSIONS: LRT may be used as an alternative tool in clinical practice to determine intraocular pressure when conventional devices and techniques might be inadequate or unreliable.
Authors: Roheena Kamyar; Jennifer S Weizer; Fernando Heitor de Paula; Joshua D Stein; Sayoko E Moroi; Denise John; David C Musch; Shahzad I Mian Journal: Cornea Date: 2012-02 Impact factor: 2.651
Authors: George D Kymionis; Theoni D Panagiotoglou; Sonia H Yoo; Nikolaos S Tsiklis; Emmanouel Christodoulakis; George C Hajithanasis; Miltiadis K Tsilimbaris; Ioannis G Pallikaris Journal: Cornea Date: 2007-02 Impact factor: 2.651
Authors: E T Detorakis; F Chrysochoou; V Paliobei; A G Konstas; V Daniilidis; D Balatsouras; G Kefalidis; V P Kozobolis Journal: Eur J Ophthalmol Date: 2008 Jan-Feb Impact factor: 2.597