I have had brain fog, dizziness and painful strained eyes for nearly 20 weeks now. I have had my eyes checked and they are fine but the constant light headedness and eye related problems are really getting me down now. My eyes feel constantly strained and I find it difficult to look at things without it getting worse. Sometimes in the morning when my eyes are closed all I see is bright shapes and it feels like the whole world is tilting. Blood tests in Friday but to be honest I am really starting to worry that something is not right.