Multifunctional apparatus and instruments, with a screen, namely, free-standing or desktop computerized terminals for measuring various parameters for spectacle lenses, such as spectacle frame shape and size, the eye position in the frame and the wearer's visual behavior, by detecting and measuring eye and head movements in response to visual stimuli; multifunctional apparatus and instruments, with a screen, namely, free-standing or desktop computerized terminals for photography or video reco...