There is no firm evidence, but you do think VS runs in families? Does it run in yours? I have had VS for a few years and suffer with it in a moderate range. I have two children and my oldest (only 5 years old) just described to me about dots that he sees flickering around everywhere he looks. Tiny little dots, teeny teeny tiny, he says. He says that he sees them all the time, even with his eyes closed. It sounds to me (and my husband) like he is describing VS and the thought that he may also have to work through this his whole life, is just... so sad to me. How many of you also have family members or children who suffer with VS?