• Your order of XR Toric Lenses requires 35 days. Biofinity XR Toric silicone-hydrogel, contact lenses from CooperVision, are designed for users with higher degrees of astigmatism and offer high levels of comfort when using them. CooperVision's Aquaform technology gives lenses high oxygen permeability and adequate hydration as they retain water in the lenses and keep them hydrated for long periods of time. Combining high water content and excellent perspiration, Biofinity XR Toric contact lenses are approved, on the advice of an ophthalmologist, for continuous use for up to 30 days.