Did you have a shift in eye dominance? I used to be left eye dominant and now its somewhere in between. I'm always aware of my left eye and the more stimuli the more it hurts, also when I was at the eye Dr the left eye was seeing higher than the right, he checked it with the smaller prisms to see how much it was offset. I've been in a tbi clinic for 3 weeks going twice a week to pt and ot with both working on eye exercises. Good luck with the Dev. Opt. keep the sunglasses on (good ones that dont distort anything)