need_money, if you're worried about this enough to start up a thread on here, take 15 minutes or so and go to the doctor about it. And whilst you're at it, get your eyes examined - that problem might be as simple to fix as getting a pair of specs.
The doctor and/or optician are the only people who you can really rely on to give you a proper medical opinion.
(oh, and as a ps: having read a few other posts of yours, it might be an idea to get yourself screened for STIs too whilst you're at the docs....)