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A guest host (or guest presenter in the United Kingdom) is a host, usually of a talk show, that substitutes for the regular host if they are, for example, ill or have other commitments. Although guest hosts are often undesirable, some shows have seen the guest host do a better job than the main host,...
Provided are protective glasses and / or sunglasses equipped with a frame adapted to support a lens assembly having at least one structural lens made of plastics material and at least one liquid crystal (LC) film of the guest host type arranged on an inner side of the at least one structural lens and controlled by an electronic board powered by an energy source. The at least one structural lens has a free edge extending beyond an outline of the at least one LC film at which the lens assembly is fixed to the frame. A free space is provided between the frame and the at least one LC film. The frame is provided with a vertically projecting rib covering the free edge and the free space. The rib not only reduces deformations of the lens assembly, but also prevents infiltrations of light around the LC film that would compromise comfortable vision.