Hue: A Quantitative Measure of Optic Nerve Color

Optic nerve color is one of the three cardinal features used to evaluate the optic nerve. Quantitative measures have been used to aid in evaluating each feature; however, most methods for evaluating optic nerve color require specialized non-commercially available equipment (microdensitometry and fundus reflectometry). Hue is a quantitative measurement of color that has been separated from an image's intensity and can be easily obtained from routine fundus photography without significant image manipulation. We hypothesize that hue can be easily used to differentiate between glaucomatous optic neuropathy (GOA) versus non-glaucomatous optic neuropathy (NGOA).