Hi.
I don't know how to describe it but sometimes I would be standing or sitting
and all of a sudden I get a clouded vision.  The first time it happened I
thought it was a head rush.  But this lasted for approx. 2 minutes.  I did
not feel dizzy my vision was just clouded.  I tried rubbing my eyes but this
did not work.  I never had this happen to me before, besides two times
previously.  The first time it happened I was cleaning the bathroom with some
cleaners and I stood up and suddenly got clouded vision.  Therefore i assumed
it was a headrush or the fumes from the cleaner were contributing to this.
But it lasted for a least 2 minutes.  i lay down until it cleared up.  The
second time it happened i was just sitting down.  And today I was just
sitting in front of the computer and it happened again.  
What does this mean?  What should I do?  Is this normal?