The lens material consists of approximately 33% water and 67% lotrafilcon B, a fluoro-silicone
containing hydrogel which is surface treated. The color additive copper phthalocyanine is added to the
lens material to create a light blue edge-to-edge color to make lenses easier to see when handling.
Lens Properties:
• Refractive Index hydrated:
1.42
• Light Transmittance:
≥ 96% (@ 610 nm, -1.00D)
• Oxygen Permeability (Dk):
110 x 10
-11
(cm
/sec) (ml O /ml x mm Hg),
measured at 35°C (intrinsic Dk-Coulometric method)
• Water Content:
33% by weight in normal saline