So i went to the dr and i have almost 20 20 vision so i dont really need glasses. But my eyes seem to stop wanting to foccus sometimes.. im only 19 so im not old. Ill be reading and after i get through a page or so my vision will go so blurry that i cant read.. The same thing happens when im on the computer, but the dr didnt really know what it was. Its really frustraging though because i love reading! I have astigmatism could that by why? Any help would be good thanks!