I had a few photos with DS in them about 18 mths ago with just one white flash, one photo in particular and I totally freaked out. (and I mean totally - didn't sleep for a week and had the runs and vomiting for a few days - hello anxiety) We got a referral from my local GP to a wonderful children's eye dr (can't remember his fancy pants name now! maybe opthamologist?) at the Royal Children's, we had to wait about 6-8 weeks to see him and it was a looong wait and it was all fine, he did all the checks and he was fine. He said it can happen from time to time but it can be an indicator so it's best to get it checked. Google is NOT your friend but if a few photos have turned up it is best to get it checked.