Polarising microscopy involves the use of polarised light to investigate the optical properties of various specimens. Although originally used predominantly in the field of geology, it has recently become more widely used in medical and biological research fields too.
Polarising light microscopy is a contrast-enhancing technique to allow you to evaluate the composition and three-dimensional structure of anisotropic specimens. It uses polarising filters to make use of polarised light, configuring the movement of light waves and forcing their vibration in a single direction.