An apparatus is disclosed for using quasielastic light scattering to determine the degree of cataractogenesis of a lens in vivo. By collecting and analyzing light scattered from the lens, it is possible, using the autocorrelation function or the power spectrum, to separate the fluctuations into two components:...http://www.google.se/patents/US5072731?utm_source=gb-gplus-sharePatent US5072731 - Apparatus for detecting cataractogenesis using quasielastic light scattering