I currently use the Acuvue Oasis 2 week contact lenses, they are supposed to let far more oxygen into the eye but should be taken out every night. However recently they have been giving me problems when falling asleep with them on (which I know I shouldn't do but there are occasions when I can't take them out i.e. when in the field or when pissed) - I have been getting Contact Lens Acute Red Eye. All is well when I am in my cosy flat and can deal with it, but it could be a major problem if I got it in the field. I was looking into the Focus Night and Day 30 day contact lenses, has anyone ever used them and have you encountered any problems with sleeping in them before? I was going to get a box and give them a bash, but I don't want to shell Â£30 so quickly. Cheers for any help.