[Scanning electron microscope investigations on soft contact lenses (author's transl)].

In this article soft contact lenses made from various substances were examined by the SEM with regard to their ultrastructural nature under various experimental conditions. It was established, that the contact lens material of various chemical compositions was homologous, free from streaks and bubbles and absolutely smooth in the surface and fracture planes. Dirty lenses showed deposits on and in the surface, whose origin and composition is explained.