As @brightwings said, this is getting me a bit concerned as well. I hope you have been to see an eye specialist, if not please do so. I would also think that a consult with a neruologist might be good.
You said that this started in April and that it is noticeable to others. Do you have any other facial paralysis? Any history of Guillian Barre Syndrome? Any family history of this type of problem?
If you are comfortable doing so, will you post about what specialists you have seen? Any disorders that have been ruled-out?