I have worn glasses since i was in the second grade. i see black dots floating in my vision. what are they and should i worryk? checkup two years ago

"floaters" are spots: …in our vision that may look like black/grey specks/ strings/ cob webs that drift about when we move our eyes. As eyes age, micro- scopic fibers in the jelly-like vitreous clump together & cast shadows on retina. Most are benign unless large #s appear as well as flashes of light or loss of peripheral vision, in which cases you should see ophthalmologist immediately. [adapted from mayo clinic site].

See a doc: Floaters are possibly a sign of retinal tear or detachment. See an eye doctor, and check out http://www.2020vision.Com/floaters.Html.