Can higher end tonometers be used interchangeably in routine clinical practice?
Context: Precise intraocular pressure (IOP) measurement is important in glaucoma practise. Various instruments are available today to accurately measure IOP. Thus, the question arises about which instrument to use and whether all of them can be used interchangeably. Aims: To assess the agreement bet...
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doaj-3e9b53b0b4434ded8f0f79810bfaa3572020-11-25T01:03:42ZengWolters Kluwer Medknow PublicationsIndian Journal of Ophthalmology0301-47381998-36892016-01-0164213213510.4103/0301-4738.179723Can higher end tonometers be used interchangeably in routine clinical practice?Kunjan Jayantilal PatelSaurabh P JainPriti R KapadiaNikunj V PatelSaurabh PatelVikas PatelContext: Precise intraocular pressure (IOP) measurement is important in glaucoma practise. Various instruments are available today to accurately measure IOP. Thus, the question arises about which instrument to use and whether all of them can be used interchangeably. Aims: To assess the agreement between noncontact tonometer (NCT), rebound tonometer (RBT), Goldmann applanation tonometer (GAT), and dynamic contour tonometer (DCT) in measuring IOP. Subjects and Methods: 499 eyes of 250 patients were evaluated during a period of 24 months from September 2010 to August 2012 and measurement of IOP by NCT, RBT, GAT, and DCT was done in the given sequence. The agreement was assessed by use of the Bland–Altman plot keeping GAT as a gold standard technique. Results: The mean IOP value of NCT, RBT, GAT, and DCT was 15.9 ± 5.5, 15.9 ± 5.8, 15.9 ± 4.9, and 16.0 ± 4.7 mm of Hg, respectively. The limits of agreement of GAT with DCT, NCT, and RBT were found to be +5.4 to −5.2, −4.7 to +4.6, and −5.2 to +5.1 mm of Hg, respectively. Conclusions: A positive and strong correlation was found between newer tonometers and GAT, but the limit of agreement was clinically unacceptable. The use of a single tonometer should be practised at a glaucoma clinic for a patient at each follow-up.http://www.ijo.in/article.asp?issn=0301-4738;year=2016;volume=64;issue=2;spage=132;epage=135;aulast=PatelBland–Altman plot, dynamic contour tonometer, Goldmann applanation tonometer, intraocular pressure, noncontact tonometer, rebound tonometer |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Kunjan Jayantilal Patel Saurabh P Jain Priti R Kapadia Nikunj V Patel Saurabh Patel Vikas Patel |
spellingShingle |
Kunjan Jayantilal Patel Saurabh P Jain Priti R Kapadia Nikunj V Patel Saurabh Patel Vikas Patel Can higher end tonometers be used interchangeably in routine clinical practice? Indian Journal of Ophthalmology Bland–Altman plot, dynamic contour tonometer, Goldmann applanation tonometer, intraocular pressure, noncontact tonometer, rebound tonometer |
author_facet |
Kunjan Jayantilal Patel Saurabh P Jain Priti R Kapadia Nikunj V Patel Saurabh Patel Vikas Patel |
author_sort |
Kunjan Jayantilal Patel |
title |
Can higher end tonometers be used interchangeably in routine clinical practice? |
title_short |
Can higher end tonometers be used interchangeably in routine clinical practice? |
title_full |
Can higher end tonometers be used interchangeably in routine clinical practice? |
title_fullStr |
Can higher end tonometers be used interchangeably in routine clinical practice? |
title_full_unstemmed |
Can higher end tonometers be used interchangeably in routine clinical practice? |
title_sort |
can higher end tonometers be used interchangeably in routine clinical practice? |
publisher |
Wolters Kluwer Medknow Publications |
series |
Indian Journal of Ophthalmology |
issn |
0301-4738 1998-3689 |
publishDate |
2016-01-01 |
description |
Context: Precise intraocular pressure (IOP) measurement is important in glaucoma practise. Various instruments are available today to accurately measure IOP. Thus, the question arises about which instrument to use and whether all of them can be used interchangeably. Aims: To assess the agreement between noncontact tonometer (NCT), rebound tonometer (RBT), Goldmann applanation tonometer (GAT), and dynamic contour tonometer (DCT) in measuring IOP. Subjects and Methods: 499 eyes of 250 patients were evaluated during a period of 24 months from September 2010 to August 2012 and measurement of IOP by NCT, RBT, GAT, and DCT was done in the given sequence. The agreement was assessed by use of the Bland–Altman plot keeping GAT as a gold standard technique. Results: The mean IOP value of NCT, RBT, GAT, and DCT was 15.9 ± 5.5, 15.9 ± 5.8, 15.9 ± 4.9, and 16.0 ± 4.7 mm of Hg, respectively. The limits of agreement of GAT with DCT, NCT, and RBT were found to be +5.4 to −5.2, −4.7 to +4.6, and −5.2 to +5.1 mm of Hg, respectively. Conclusions: A positive and strong correlation was found between newer tonometers and GAT, but the limit of agreement was clinically unacceptable. The use of a single tonometer should be practised at a glaucoma clinic for a patient at each follow-up. |
topic |
Bland–Altman plot, dynamic contour tonometer, Goldmann applanation tonometer, intraocular pressure, noncontact tonometer, rebound tonometer |
url |
http://www.ijo.in/article.asp?issn=0301-4738;year=2016;volume=64;issue=2;spage=132;epage=135;aulast=Patel |
work_keys_str_mv |
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