I'm giving contact lenses a try and apart from the fact that I sometimes want to scratch my eyes out because they irrtate me (it's only been a few days), I'm also finding my vision pretty variable with them in. My vision seems to go between being lovely and clear to blurred regularly. I've found that, sometimes, sticking a (clean) finger in and making the lenses move slightly does the trick but I obviously don't want to keep doing this. What could the problem be? Could it be that they're not quite the right size/shape?