I am 20 male. My left eye have myopia 0.5 and right eye have -0.25 refractive error and I use glasses for it. My right eye watery and fatigue while using computer (reading books and playing games) especially while playing game. That symptoms goes away after I took a rest. When I am reading I feel like I can't focus a little bit but I can still read the words clearly only happen while reading books, paper book are ok to read. I would like to know it is serious symptoms or not and which treatment should I use. I use screen a lot because I am web developer.