Frequency 55 Aspheric

Frequency 55 AsphericMildly astigmatic patients are given crisp, irritant-free vision when wearing Frequency 55 Aspheric contact lenses.  For optimum comfort, Frequency 55 lenses are replaced with new lenses after one month, avoiding the buildup of pollutants that can irritate your eyes and cloud your vision.  You will be able to locate your Frequency 55 disposable contacts in the cleaning solution with ease because of the light tint that the lenses are infused with.

Lens Material
The lens material methafilcon A , is a random copolymer of hyroxyethylmethacrylate and methacrylic acid. The lenses are tinted edge to edge for visibility purposes with the color additive, Reactive Blue No. 4.

Lens Parameters
Diameter: 14.2mm to 15.0mm
Base Curve: 8.0mm to 9.5mm
Center Thickness: 0.15mm to 0.60mm (varies with power)
Powers: -20.00 to +20.00D
Multifocal Add Powers: +0.50 to +4.00D
Central Zone Diameter: 2.3 to 2.6mm (D)
1.7 to 2.0mm (N)
Lens Properties
Light Transmittance: >96%
Water Content: 55%
Oxygen Permeability: 19.7 x 10-11 (cm2/sec) (ml 02/ml x mmHg) at 35 degrees C (Fatt method for determination of oxygen permeability)

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