Not long after this started for me I noticed that wearing sunglasses seemed to help alleviate the symptoms a bit. This progressed to non-corrective glasses for indoors. At some point I decided maybe I looked better without glasses and tried contacs (non-corrective). Aside from never getting over the feeling that I had something stuck in my eye, I don't recall any change in the DP symptoms - better or worse. Went back to wearing glasses, which honestly does seem to help. Maybe the narrowing of my field of vision has something to do with it. Gets me to focus somehow.
Unless it is really, really murky, I always wear shades outside during the day, and usually wear glasses (tinted just slightly across the top to help with the flourescent light issue) inside.