Biotrue ONEday lenses are made with HyperGel, a next generation bio-inspired material that mimics the lipid layer of tear film, prevents dehydration and maintains consistent optics. HyperGel allows oxygen to flow freely through the lens. These comfortable lenses give a high resolution for crisp, clear vision even in low light conditions. The UV filter in contact lenses increases the protection of the cornea from the dangerous ultraviolet radiation. However, lenses do not cover the entire eye or eye area, so the combination of contact lenses that have UV filter and sunglasses is the ideal protection against harmful UV rays.