Fig. 6. Automated densitometric analysis of a digital Scheimpflug slit image of a normal 50-year-old lens. Because of the characteristics of the lens layers, the location of the cortex and nucleus can be automatically detected by special software, and with automated densitometry, mean optical density values can be easily and quickly obtained for analysis. Thus, automated detection, classification, and grading may be possible. Note the concentric layers of lens fibers in the cortex and the nucleus.