“Histologic studies have shown polymetric birefringent particles surrounded by mononuclear phagocytes and multinucleated foreign body giant cells.”

“These aggregates scatter light, however, due to their amorphous nature, and would not be spherulitic or birefringent.”

“When polarization is a concern, linear and birefringent polarizers can be used to remove, reflect, or refract one of the polarization components.”