Help docs! i'm trying to find out what causes the little lines in your eyesight?

Go to your doctor: This is probably a posterior vitreous detachment. The gel inside your eyes, vitreous, has partially liquefied ; is pulling away from the retina which lines the back of your eye ; is a normal with aging. This causes floaters. The only concern is if it begins to pull on the retina ; tears it. Retinal tears can lead to retinal detachment ; blindness. Go to your doctor to be sure.