Eye floaters can form in anyone and are often completely harmless. They’re often associated with advancing age, as the vitreous (the jelly-like substance within the eye) naturally shrinks. As it does it pulls away from the retina, taking with it tiny strands of collagen-rich tissue, rather like strands of a spider’s web. These clump together and float about within the vitreous.This is a natural progression of aging and is the most common cause of floaters. Other reasons that floaters form include:
Posterior uveitis: This is inflammation at the back of the eye. Debris can be released into the eye as a result of infection, causing floaters to form
Eye trauma: Any injury to the eye has the potential to cause bleeding. Blood in the eye can form a floater
Diabetic retinopathy: Floaters can form as part of the progression of the disease
The sudden appearance, or change in number, of floaters, can be symptomatic of a serious problem, such as a torn or detached retina, an infection within the eye, tumors, or as the result of an autoimmune condition.