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Abstract #59460 Published in IGR 16-3
Correlation between the pressure-to-cornea index and both structural and functional measures of glaucoma
Franco AM; Kasahara NIndian Journal of Ophthalmology 2014; 62: 907-910
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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Classification:
2.2 Cornea (Part of: 2 Anatomical structures in glaucoma)
6.1.3 Factors affecting IOP (Part of: 6 Clinical examination methods > 6.1 Intraocular pressure measurement; factors affecting IOP)