<Li> Prisms in binoculars use total internal reflection, rather than reflective coatings, to fold optical paths and show erect images . </Li> <Li> Some multi-touch screens use frustrated total internal reflection in combination with a camera and appropriate software to pick up multiple targets . </Li> <Li> Gonioscopy employs total internal reflection to view the anatomical angle formed between the eye's cornea and iris . </Li> <Li> A gait analysis instrument, CatWalk XT, uses frustrated total internal reflection in combination with a high speed camera to capture and analyze footprints of laboratory rodents . </Li>

Brilliance of diamond due to total internal reflection