CIBA Vision’s Focus 1-2 Week Visitint contact lenses are designed to be worn as daily lenses for up to two weeks and discarded. Because Focus 1-2 Week Visitint disposable contact lenses are routinely replaced with fresh lenses, your eyes are kept from being irritated by deposits building up. For ease of use, Focus 1-2 Week Visitint lenses are manufactured with a light blue tint to assist you in locating your lenses in the solution.
The lens material is 55% water and 45% vifilcon A, a hydrophilic co-polymer of 2-hydroxyethyl methacrylate and povidone, USP. The chemical name is poly (2-hydroxyethyl methacrylate-co-ethylene dimethacrylate co-methacrylic acid-g-povidone).
|Base Curve:||8.4mm and 8.8mm|
|Power Range:||-6.50D to -10.00D (0.50D steps)|
|Center Thickness:||0.06 mm at all minus powers|
|0.12 mm at +3.00D (varies with power)|
|Refractive Index (hydrated):||1.415|
|Water Content:||55% by weight in normal saline|
|Oxygen Permeability:||16.0 x 10-11 (cm2/sec)(ml 02/ml x mm Hg), measured at 23 degrees C (Fatt method)|