Patients are given crisp, irritant-free vision when wearing Choice AB contact lenses. CIBA Vision Choice AB disposable contacts are replaced with new lenses after on to two weeks of use, avoiding the buildup of pollutants that can irritate your vision and cloud your vision. Locating your Choice AB lenses in the cleaning solution is easier because of the light tint that the lenses are infused with.
The lens material (methafilcon A) is a hydrophilic polymer of 2-hydroxyethyl methacrylate (HEMA) and methacrylic acid cross-linked with ethyleneglycol dimethacrylate (45%) and water (55%). Choice AB (methafilcon A) Soft Contact Lenses are tinted using the following color additive: Reactive Blue 19.
|Chord Diameter:||14.0mm to 15.0mm|
|Center Thickness:||0.06mm to 0.40mm|
|Base Curve:||8.40mm to 9.30mm|
|Powers:||-20.00 Diopters to +20.00 Diopters|
|Light Transmittance:||Approximately 98%|
|Oxygen Permeability (Dk):||18.8 x 10-11 (cm2 /sec) (ml O2 /ml x mm Hg) at 35 degrees C [Fatt Method for determination of oxygen permeability]|