Hey I'm not sure. Y you called me that, I am clueless right now, that comment on my page I have no idea y she left that for me, but I'm surprised you did not at least ask me before judging me. If you two have a feud between each other I'm not aware of it, and where have I been ever fake to you in my friendship.
Yes it can
THis is common. Try wearing your new glasses for a little while each day until you are used to them.
I'm not really sure about this but I guess extreme concentration can cause this.