Bausch + Lomb ULTRA for Astigmatism are monthly toric contact lenses for the correction of astigmatism with unique MoistureSeal technology. ULTRA contact lenses by Bausch & Lomb provide sharper vision and long-term comfort of wear throughout the day while keeping your eyes healthy. What is astigmatism? Astigmatism is an aspherical refractive defect where the eye exhibits different refraction in two sections. Astigmatism may be regular (most frequent) or irregular. Read more about what is astigmatism. The ground-breaking MoistureSeal technology uses the unique process of two-phase polymerization that offers unbeatable oxygen permeability and a low modulus which results in better flexibility. In combination with high water content, they guarantee all-day moisturizing and optimum wettability. ULTRA contact lenses maintain 95% moisture for a full 16 hours and prevent the lens from the dryness that is often caused by less frequent blinking while using electronic devices. They bring advantages in all key areas and offer the best physical properties in their class. The constant moisture of the ULTRA contact lenses is the key condition for everlasting comfort during wear.