My daughter (6yo) has complained of vision problems. She says sometimes she sees 'clouds' or she can't see past the fuzz (like large floaters). the episodes last for several minutes and are not a daily occurrence. The optician said she has perfect vision and couldn't see anything wrong, so we have waited to see if it continues. Yesterday she came home from school and said that at lunchtime her vision went all blue for about an hour half and hour and that she had to tell her friends which colouring pen she needed as she couldn't tell them apart - they all were blue. She hasn't had any recent bumps to the head that I know of. We have recently come back from a trip to Australia, so I'm not sure if jetlag needs to be taken into consideration...