PureVision2 vs. Bausch + Lomb ULTRA
PureVision2 and Bausch + Lomb ULTRA are two monthly replaceable contact lenses manufactured by Bausch & Lomb Inc. While PureVision2 is a silicone hydrogel lens, Bausch & Lomb decided with the ULTRA to develop a product family using non-ionic polymers and a wetting agent. For the ULTRA, this material combination translates into a very high oxygen transmission capability with a water content of 46%. In comparison, PureVision2 with its balanced oxygen/water ratio is slightly thicker but doesn't integrate any additional wetting agent. So it's really the difference in the material that is driving the difference in the specifications. And this doesn't necessarily mean any comfort advantage for one of the lenses over the other.
On average the daily cost is slightly higher for ULTRA, but still in a very competitive 22-33 cent range (compared to the 17-29 cent range for PureVision2). Both lenses are slightly tinted and feature an aspherical design for the reduction of spherical aberration and glare.
PureVision2 and Bausch + Lomb ULTRA - Spec Sheets
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