Patent ID: 8641193

Claim:
A method of analyzing a retina comprising: applying visible and near-infrared light to the retina; measuring an intensity of light reflected at a plurality of depths for each of a plurality of pixels of the retina within a first band of visible light; measuring an intensity of light reflected at a plurality of depths for each of the plurality of pixels of the retina within a second band of near-infrared light; comparing the intensity of light reflected within the first band and the intensity of light reflected within the second band: defining a retinal nerve fiber layer; segmenting the retina based on the defined retinal nerve fiber layer; summing the intensities of the reflected light of the first band at each depth within the retinal nerve fiber layer for each of the plurality of pixels to calculate a reflectance, R 1 , of the first beam for the retinal nerve fiber layer; summing the intensities of the reflected light of the second band at each depth within the retinal nerve fiber layer for each of the plurality of pixels to calculate a reflectance, R 2 of the second beam for the retinal nerve fiber layer; and dividing R 1 by R 2 to calculate a wavelength ratio for each of the pixels of the retina.