Comparison of RNFL thickness and RPE-normalized RNFL attenuation coefficient for glaucoma diagnosis

K. A. Vermeer; J. van der Schoot; H. G. Lemij; J. F. de Boer

doi:10.1117/12.2000664

26 March 2013 Comparison of RNFL thickness and RPE-normalized RNFL attenuation coefficient for glaucoma diagnosis

K. A. Vermeer, J. van der Schoot, H. G. Lemij, J. F. de Boer

Proceedings Volume 8567, Ophthalmic Technologies XXIII; 85671D (2013) https://doi.org/10.1117/12.2000664
Event: SPIE BiOS, 2013, San Francisco, California, United States

Abstract

Recently, a method to determine the retinal nerve fiber layer (RNFL) attenuation coefficient, based on normalization on the retinal pigment epithelium, was introduced. In contrast to conventional RNFL thickness measures, this novel measure represents a scattering property of the RNFL tissue. In this paper, we compare the RNFL thickness and the RNFL attenuation coefficient on 10 normal and 8 glaucomatous eyes by analyzing the correlation coefficient and the receiver operator curves (ROCs). The thickness and attenuation coefficient showed moderate correlation (r=0.82). Smaller correlation coefficients were found within normal (r=0.55) and glaucomatous (r=0.48) eyes. The full separation between normal and glaucomatous eyes based on the RNFL attenuation coefficient yielded an area under the ROC (AROC) of 1.0. The AROC for the RNFL thickness was 0.9875. No statistically significant difference between the two measures was found by comparing the AROC. RNFL attenuation coefficients may thus replace current RNFL thickness measurements or be combined with it to improve glaucoma diagnosis.

Citation Download Citation

K. A. Vermeer, J. van der Schoot, H. G. Lemij, and J. F. de Boer "Comparison of RNFL thickness and RPE-normalized RNFL attenuation coefficient for glaucoma diagnosis", Proc. SPIE 8567, Ophthalmic Technologies XXIII, 85671D (26 March 2013); https://doi.org/10.1117/12.2000664

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