I've been recently given a pair of contact lenses by my doctor. I'm myopic (-5). When I put the lenses on , the distance vision is perfect, but when i'm trying to read or to look at the near objects , the vision is a little bit blurred. I've been wearing my contacts for only two days( 4 hours a day). Why is my near vision blurred, do the eyes have to adapt or what? Thanks for help.