Yes, the material in Acuvue 1 Day moist, etafilcon A, similar to the other daily lens materials are considered like "bandage" because the material is like wearing saran wrap on your eyes. It doesn't cut off oxygen supply if you're wearing them correctly for during the day and then throw them away after 12 hours. If you SLEEP in them however, that is extremely dangerous for your vision and the oxygen supply to the cornea and your vision can actually become worse. There is a diagnosis called neovascularization you can look it up and read more about i!!