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Indian Journal of Clinical and Experimental Ophthalmology


To study the correlation between the pressure-to-cornea index and both structural and functional measures of glaucoma


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Research Article

Author Details : Shail Shah, Rajni Sethia*, R N Kothari, Aakash Patel, Hushedar Kharas

Volume : 6, Issue : 2, Year : 2020

Article Page : 203-207


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Abstract

Background: Pressure to cornea index was proposed in order to integrate intraocular pressure and central
cornea thickness as a single risk factor for glaucoma. PCI could better reflect the individual susceptibility
to glaucomatous damage than either IOP or CCT by itself.
Aim of this study was to find correlation between the pressure-to-cornea index with structural and
functional measures of glaucoma.
Materials and Methods: In this cross sectional study, PCI was calculated for 100 eyes of 53 patients
(ocular hypertension, primary open angle glaucoma, normal tension glaucoma and controls). Cup to disc
ratio, mean deviation(MD) and pattern standard deviation (PSD) as recorded by Humphrey automated
perimetry (SITA 24-2) were correlated with PCI.
Results: The difference in the value of PCI among different groups was statistically significant (p=0.000).
There was positive correlation between PCI and C/D (p=0.000); negative correlation between PCI and MD
(p=0.000); and positive correlation between PCI and PSD(p=0.106).
Conclusions: We conclude that PCI can be used as a unified risk factor. Also we have found statistical
correlation between structural and functional measures of glaucoma to pressure to cornea index (PCI).
Hence, we conclude that it can be used for evaluating glaucoma severity as well.

Keywords: Glaucoma, PCI, PSD, CCT.

Doi : 10.18231/j.ijceo.2020.044

How to cite : Shah S, Sethia R, Kothari R N, Patel A, Kharas H, To study the correlation between the pressure-to-cornea index and both structural and functional measures of glaucoma. Indian J Clin Exp Ophthalmol 2020;6(2):203-207

Copyright © 2020 by author(s) and Indian J Clin Exp Ophthalmol. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (CC-BY-NC 4.0) (creativecommons.org)