PureVision lenses with patented AerGel silicone hydrogel material have overnight corneal swelling equivalent to wearing no lens at all.1

PureVision lenses Dk/t at -3.00D = 110 (non-edge corrected), 91 (edge corrected).
AerGel silicone hydrogel material coupled with Performa surface process delivers:
Enhanced wettability and deposit resistance without inhibiting oxygen or fluid transport.
High oxygen transmissibility for healthy, white eyes.
Reduced risk of hypoxic stress to help maintain excellent ocular health.