Biotrue ONEday for Astigmatism are Bausch & Lomb's daily toric contact lenses offer sharp, stable vision, high water content, UV filter and surface active technology that provides long-term moisture. Biotrue ONEday for Astigmatism lenses retain 98% of moisture for up to 16 hours, contain 78% water, just like the cornea of the eye providing high levels of moisture and hydration.