What makes contacts go bad.?!
Question: What makes contacts go bad.?
if the contacts say 90 days. does that mean i wear them for 90 days then throw them out. or 90 days after there open there useless.
Answers:
Best Answer - Chosen by Voters
It depends which date you are looking at. If its that you can wear them for 90 days then that is 90 days wear. AFter that they can't transmit oxygen as well so start to be bad for your eyes. So if you don't wear them the odd day you can keep them longer. However doublign that would probably be a bad idea as the lenses ability to transmit oxygen will start going down. I certainly find that if I haven't worn my fortnightlies for a week becaues I've got a cold they dont' really feel comfortable for a full week more.