Preference Toric XR contact lenses from CooperVision are designed to correct the vision of patients suffering from astigmatism. The “XR” stands for extended range, giving you a much wider range of prescription choices than the standard Preference Toric lens. Preference Toric XR lenses are made with a visible tint to assist you in finding your lenses in the solution.
The lens material, tetrafilcon A, is a hydrophilic random terpolymer of 2-hydroxyethyl methacrylate, N-vinyl-2-pyrrolidone and methylmethacrylate joined in a three dimensional network of terpolymer chains by divinylbenzene cross-links.
|Base Curve:||8.0 to 9.5mm|
|Diameter:||14.0 to 15.0mm|
|Sphere Power:||-20.00 to +20.00D|
|Cylinder Powers:||plano to -12.00D|
|Center Thickness:||0.07 to 0.78mm|