Correlation between the pressure-to-cornea index and both structural and functional measures of glaucoma

Purpose: the pressure-to-cornea index (PCI) was proposed in order to integrate intraocular pressure and central cornea thickness as a single-risk factor for glaucoma. The purpose of this study was to correlate the PCI with a structural and two functional measures of glaucoma. Setting: University Hos...

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Main Authors: Andrea MBV Franco, Niro Kasahara
Format: Article
Language:English
Published: Wolters Kluwer Medknow Publications 2014-01-01
Series:Indian Journal of Ophthalmology
Subjects:
Online Access:http://www.ijo.in/article.asp?issn=0301-4738;year=2014;volume=62;issue=9;spage=907;epage=910;aulast=Franco
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author Andrea MBV Franco
Niro Kasahara
author_facet Andrea MBV Franco
Niro Kasahara
author_sort Andrea MBV Franco
collection DOAJ
description Purpose: the pressure-to-cornea index (PCI) was proposed in order to integrate intraocular pressure and central cornea thickness as a single-risk factor for glaucoma. The purpose of this study was to correlate the PCI with a structural and two functional measures of glaucoma. Setting: University Hospital in South America. Materials and Methods: Pressure-to-cornea index was calculated for 70 eyes of 36 subjects (glaucoma and suspects). Cup-to-disc (C/D) ratio, mean deviation (MD) and pattern standard deviation (PSD) as recorded by Humphrey automated perimetry (SITA 24-2) were correlated with PCI (Pearson′s correlation coefficient). Results: Pearson′s correlation coefficient between PCI and C/D was 0.329 (95% confidence interval [95% CI], 0.09-0.526; P = 0.006); between PCI and MD was − 0.356 MD (95% CI, −0.549 to − 0.126; P = 0.003); and between PCI and PSD was − 0.215 (95% CI, −0.433 to 0.025; P = 0.07). Conclusion: In addition to serve as a single-risk factor, PCI can be used to stage glaucoma severity as well.
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spelling doaj.art-eafb5d56d75641df825ce765a3d0ec812022-12-21T18:43:53ZengWolters Kluwer Medknow PublicationsIndian Journal of Ophthalmology0301-47381998-36892014-01-0162990791010.4103/0301-4738.143924Correlation between the pressure-to-cornea index and both structural and functional measures of glaucomaAndrea MBV FrancoNiro KasaharaPurpose: the pressure-to-cornea index (PCI) was proposed in order to integrate intraocular pressure and central cornea thickness as a single-risk factor for glaucoma. The purpose of this study was to correlate the PCI with a structural and two functional measures of glaucoma. Setting: University Hospital in South America. Materials and Methods: Pressure-to-cornea index was calculated for 70 eyes of 36 subjects (glaucoma and suspects). Cup-to-disc (C/D) ratio, mean deviation (MD) and pattern standard deviation (PSD) as recorded by Humphrey automated perimetry (SITA 24-2) were correlated with PCI (Pearson′s correlation coefficient). Results: Pearson′s correlation coefficient between PCI and C/D was 0.329 (95% confidence interval [95% CI], 0.09-0.526; P = 0.006); between PCI and MD was − 0.356 MD (95% CI, −0.549 to − 0.126; P = 0.003); and between PCI and PSD was − 0.215 (95% CI, −0.433 to 0.025; P = 0.07). Conclusion: In addition to serve as a single-risk factor, PCI can be used to stage glaucoma severity as well.http://www.ijo.in/article.asp?issn=0301-4738;year=2014;volume=62;issue=9;spage=907;epage=910;aulast=FrancoGlaucomapressure-to-cornea indexvisual field
spellingShingle Andrea MBV Franco
Niro Kasahara
Correlation between the pressure-to-cornea index and both structural and functional measures of glaucoma
Indian Journal of Ophthalmology
Glaucoma
pressure-to-cornea index
visual field
title Correlation between the pressure-to-cornea index and both structural and functional measures of glaucoma
title_full Correlation between the pressure-to-cornea index and both structural and functional measures of glaucoma
title_fullStr Correlation between the pressure-to-cornea index and both structural and functional measures of glaucoma
title_full_unstemmed Correlation between the pressure-to-cornea index and both structural and functional measures of glaucoma
title_short Correlation between the pressure-to-cornea index and both structural and functional measures of glaucoma
title_sort correlation between the pressure to cornea index and both structural and functional measures of glaucoma
topic Glaucoma
pressure-to-cornea index
visual field
url http://www.ijo.in/article.asp?issn=0301-4738;year=2014;volume=62;issue=9;spage=907;epage=910;aulast=Franco
work_keys_str_mv AT andreambvfranco correlationbetweenthepressuretocorneaindexandbothstructuralandfunctionalmeasuresofglaucoma
AT nirokasahara correlationbetweenthepressuretocorneaindexandbothstructuralandfunctionalmeasuresofglaucoma