Floaters

Floaters are spots in your vision caused by age-related changes that occur as the jelly-like substance or vitreous inside your eyes.  They may look to you like black or gray specks or strings and seem to move around when you move your eyes. Vitreous floaters are most noticeable when you look at a plain bright background, such as a blue sky or a white wall.  Though often normal to be found in an aging eye floaters can also be a symptom of a bigger problem such as a retinal tear or retinal detachment.