First-order material effects in gyromagnetic systems [encountered in ocular glucose polarimetry]

The method used for ocular glucose polarimetry is based on the Faraday rotation phenomenon encountered in gyromagnetic media. In liquids and solids the ambient isotropic relative permittivity is large compared to the gyromagnetic effects, suggesting that a first order perturbation scheme be used to analyze the problem. The general theory for such a scheme is presented.