Vitreous floaters are common especially after age 50 years, but can occur in young adults especially if they are shortsighted (myopic). These floaters are caused by degenerative changes in the collagen fibrils which make up the vitreous humour.
Posterior vitreous detachment will occur in almost all persons as we age. Most times, the symptoms of floaters settle in a few months. If the symptoms do not settle, surgery to remove the vitreous flaoters (vitrectomy) can be considered.