Durasoft 3 Optifit Toric (MTO) contact lenses from Wesley Jessen are designed to correct the vision of patients suffering from astigmatism. They are made-to-order lenses and are worn as daily lenses for up to a year. Durasoft 3 Optifit Toric lenses are made with a visible tint to assist you in locating your lenses in the solution. The tint will not change the color of your eyes.
Lens Material
The lens material, phemfilcon A, is a hydrophilic copolymer of 2-hydroxyethyl methacrylate and 2-ethoxyethyl methacrylate.
| Lens Parameters | |
| Base Curve: | Median |
| Diameter: | 14.5mm |
| Axes: | Full circle, 5 deg. steps |
| Sphere: | +4.00 to -8.00, 0.25D steps |
| Cylinder: | -0.75 to -5.75, 0.50D steps |
| Center Thickness: | Varies with power. Typically 0.05mm for minus lenses increases with increasing plus power. |
| Lens Properties | |
| Specific Gravity: | 1.178 |
| Refractive Index: | 1.412 |
| Visible Light Transmission: | 95% minimum |
| Water Content: | 55% |
| Optical Zone: | 5mm |
| Oxygen Permeability: | Dk/L=32.2x10-9ml O2 cm/sec ml mm Hg @ 35 deg. C |