The relationship of surface reflectance measurements to optical properties of layered biological media

The optical properties of a layered turbid material were associated with the reflectance on the surface in the context of the diffusion theory. Photon flux paths were used to describe the escape of photons through the diffusive medium. Results of the study show that internal optically differentiable structure can be assessed by photon flux measurements on the surface of the medium. This method separates the effect of the top layerfrom the effect of the bottom layer of tissue on the measured photons.