I'm a 23 year old male and have recently noticed some changes to my eye sight that I had some concerns about. I've started noticing that when looking at things at a distance my vision gets a bit blurry. Not blurry to the point of not being able to make out the object just having a little issues with the fine details. I've never had eye issues up until this point and have always had 20/20 vision. I've done some online eye tests and still come up as having 20/20 vision although a few of the tests that have you look at lines and ask if they are all the same color and clarity (some appear a bit grayer to me unless up closer then I can see their all black) have suggested that I might have astigmatism. I've done some research on it and it appears that its something you would get from birth or an eye injury which to my knowledge I've never had. My question is could this be astigmatism or something else or is it just eye strain? I spend most of my day working on the computer. Most of the symptoms I see about astigmatism such as double vision, eye pain, etc. I do not have. The only symptom I have is being able to see fine print or details at a distance. Mostly noticeable at night or when inside a brightly lit place such as a convenience store.