1. A method of processing acquired ophthalmic image data including ratios of intensities of backscattered imaging signals for each of a plurality of axial scans and representative values for each of the plurality of axial scans, the representative values being based at least in part on the ratios for the corresponding axial scan, the method comprising: generating a map of the representative values or ratios; generating seeds of diseased areas; growing a region encompassed by the generated seeds; identifying an area inside the region as diseased; and outputting the generated map with a contour around the regions identified as diseased or outputting a binary mask of the regions identified as diseased.