Does playng computer games increase myopia

It's possible. It depends more on if you are playing these games at a close proximity to the screen. Some people are pre-disposed to being short-sighted (ex: it runs in your family or if you were born prematurely) and doing a lot of close focus activities (close reading, sitting right up in front of the tv, playing video games too close for too long) as a child or young adult, may mean you are more likely to develop short-sightedness.