Cooper Clear FW contact lenses from CooperVision are spherical lenses designed to be worn as frequent wear lenses for up to a month.

   

Lens Material
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.

   

Lens Parameters  
Base Curve: 8.4 and 8.7 mm
Diameter: 14.4 mm
Power Range: -0.25 to -10.00

Lens Properties
 
Refractive Index: 1.43
Light Transmittance: 97%
Surface Character: Hydrophilic
Water Content: 42.5%
Oxygen Permeability: 9.3 x 10-11 (cm2/sec) (ml 02/ml x mmHg) at 35 deg. C

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