Biofinity XR are monthly silicone hydrogel contact lenses manufactured from CooperVision using the unique AQUAFORM ™. This revolutionary technology uses a silicon monomer, which enables more efficient oxygen permeability. The material used in Biofinity XR lenses is non-ionic. On their surface, no areas show evidence of the charge which is why almost no proteins bind to them. A smooth, perfectly moist surface contact lens, Biofinity XR significantly reduces the deposits of lipid residues. The great advantage of Biofinity XR lenses is their aspherical front surface, which improves their optical properties, especially acuity in low light conditions, and enables the correction of astigmatism and presbyopia. Biofinity XR lenses are intended for the correction of high powers – both plus and minus, with a daily wear regimen. Following the recommendation of a doctor however, they may be worn continuously.