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Abstract #19721 Published in IGR 9-4
Correlation between standard automated perimetry global indices and Heidelberg Retina Tomograph II parameters
Perez-Inigo A; Polo V; Larrosa JM; Ferreras A; Sanchez-Cano A; Martinez-de-la-Casa JM; Honrubia FMArchivos de la Sociedad Española de Oftalmologia 2007; 82: 401-411
PURPOSE: To correlate the optic nerve head topographic parameters measured by the Heidelberg Retina Tomograph II (HRT) with the perimetric indices of standard automated perimetry (SAP). METHODS: This study included 101 normal subjects, 247 ocular hypertensive eyes (increased intraocular pressure with normal SAP) and 102 glaucomatous subjects (IOP above 21 mmHg and abnormal standard automated perimetry). Only one eye was randomly chosen from each subject for the study. The visual field was evaluated by means of Humphrey Field Analyzer (24-2 full threshold strategy). The HRT II (Heidelberg Engineering) was used to acquire and measure the optic disc topographic parameters. Pearson correlations between topographic data and perimetric indices were performed for the total sample and each group of patients. The distribution of values obtained in the samples was normal. RESULTS: A significant correlation was found between several optic disc parameters and the global indices of SAP. Rim area, rim volume, cup/disc area ratio, rim/disc area ratio, cup shape measurement, RNFL cross-sectional area, and discriminant functions FSM and RB, showed the strongest correlation with the visual field indices in the total and glaucoma groups (RIM AREA: total group: r = 0.32; p = 4.14 x 10-11/glaucoma group: r = 0.28; p = 0.004. RIM VOLUME: total group: r = 0.26; p = 1.55 x 10-7/glaucoma group: r = 0.26; p = 0.006). The ocular hypertensive group showed few significant correlations. CONCLUSIONS: The correlations found between standard automated perimetry and HRT defined topographic parameters allow a better understanding of glaucomatous damage and make decision-making easier. LA: Spanish
Dr. A. Perez-Inigo, Hospital Universitario Miguel Servet, Zaragoza, Espana. aperezinigo@hotmail.com
Classification:
6.6.2 Automated (Part of: 6 Clinical examination methods > 6.6 Visual field examination and other visual function tests)
6.9.1.1 Confocal Scanning Laser Ophthalmoscopy (Part of: 6 Clinical examination methods > 6.9 Computerized image analysis > 6.9.1 Laser scanning)
