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=32.2×10-9ml O2 cm/sec ml mm Hg @ 35 deg. C

Leave a Reply

Your email address will not be published. Required fields are marked *