Presbyoptic patients get clear, irritant-free vision from their Focus Dailies Progressive contact lenses because they are replaced with new lenses every day, avoiding the buildup of deposits that can irritate your eyesight and cloud your vision.  You will be able to locate your lenses in the cleaning solution with ease because of the light tint they are infused with.

Lens Material
The lens material is nelfilcon A polymer (polyvinyl alcohol partially acetalized with N-formylmethyl acrylamide).

Lens Parameters  
Base curve: 8.6mm
Diameter: 13.8mm
Powers available: -6.00D to +5.00D (0.25D steps)
  Single Progressive Add – Effective Range up to +3.00D
Center thickness: 0.10 at -3.00D; 0.15 at +3.00D (varies with power)
Lens Properties  
Specific gravity: 1.06
Refractive index: 1.38 (hydrated)
Light transmittance: 96% (approx.)
Oxygen permeability (Dk): 26 x 10-11(cm2/sec)(ml 02 /ml x mm Hg) at 35 degrees C (Fatt corrected)
Water content: 69% by weight in normal saline

 

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