Comfilcon A contact lenses

Comfilcon A is a silicone hydrogel material with an average water content of 48% and a high oxygen permeability. It's commonly used by renowned manufacturer CooperVision for its Biofinity contact lenses. Since the material itself combines a relatively high water content with excellent oxygen permeability, it allows Biofinity lenses to worn for an extended time. However, extended wear should always first be approved by your eye care specialist.