Im 29 years old. My first eye floater appeared 3 month ago. I went to the doctor 4 times for retina check. All doctors said that "it is natural aging progress. there is no problem in retina. you have to learn live with floaters". I have 10 different shape of floaters now. 1 week ago i noticed horizontal lines in my eyes for 15 seconds when i reading this posts (black on white text theme). are these afterimages retinal problem or brain activity? are floaters and afterimages related? My floaters appeared in both eye and same time so Is it possible if are they "natural aging progress" ?