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A. Perdicchi, M.M. Iester, E. Fiesoletti, A. Bagnis, G. Prigione, G.A. Calabria, E. Leonardi; Comparison between GDx VCC and white on white perimetry in glaucoma patients . Invest. Ophthalmol. Vis. Sci. 2004;45(13):3346.
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© ARVO (1962-2015); The Authors (2016-present)
Purpose: To evaluate the relationship between GDx VCC parameters and white on white visual field indices. Methods: Eighty consecutive glaucomatous patients were recruited in this study. Glaucomatous patients were classified when an abnormal visual field and/or an abnormal optic disc was present. One eye was chosen randomly from all the subjects. All ONHs were examined with the GDx VCC (Laser Diagnostic Technologies, Inc, San Diego, CA, USA) and visual fields were assessed by Humphrey Perimeter, program 24–2 (Humphrey Instrument, Inc, San Leandro, CA, USA). GDx parameters and visual field indices were considered and Pearson’s r correlation coefficient was used to compare the data. A linear regression model was also calculated to evaluate the independent contribution of each GDx VCC parameters. Results: The mean age (+/– standard deviation) was 62.4 +/– 10.4, the average of the mean deviation (MD) was –2.36 +/– 2.8 and the mean pattern standard deviation (PSD) was 3.32 +/– 2.6. Significant correlation was found between MD and the number (r=0.26) and between MD and the superior average (r=–0.34). The linear regression model found the number to be the predictor variable of MD (Beta 0.41, p=0.026). Significant correlation was also found between PSD and the number (r=0.39) and between PSD and the superior average (r=–0.32). The linear regression model found the number to be the predictor variable of PSD (Beta 0.45, p=0.014). Conclusions:GDx VCC was significantly correlated to visual field indices even in early glaucomatous patients. The number is still the best indicator of visual field damage.
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