I get acuvues from Specsavers, I expect they could source oasys ones if they wanted to. Although I would tend to agree with Julieeve-just get lenses checks regularly with optician and buy the lenses on line-that would probably work out quite economical but you have to do your research. All opticians are awkward bu66ers about it and try to get you to get lenses through them, but there's no reason why should-I just opted for easy life and ended up with specsavers and pay monthly.