Dear dceite,
If you experience a change in the number of floaters, a curtain coming down or flashing lights, you should get examined again. Other conditions can simulate floaters such as inflammation inside the eye; however, a retinal specialist examining your retina should be able to distinguish this diagnosis.
Dr. Feldman
Sandy T. Feldman, M.D., M.S.
ClearView Eye and Laser Medical Center
San Diego, California
I would also like to add that i see no flashes of light, but sometimes when staring at bright computer screen i see a small tiny bright dot in the travelling a small distance in central vision.