Floaters can have causes that aren't due to any underlying disease of the eye. The vitreous gel inside the eye that helps give the eye its shape can over time clump up causing the small specks or clouds in your line of vision. Flashes occur when the vitreous gel pulls on the retina causing flashes of light or lightning streaks.
Treatments: To eliminate floaters within your vision, your Doctor may recommend a vitrectomy. Once the vitreous is removed the flashes of light will settle down on its own.