You might want to test to see if you have an astigmatism, in most cases you have it from birth, but I somehow developed it. Take a look at this chart: https:/

You might want to test to see if you have an astigmatism, in most cases you have it from birth, but I somehow developed it. Take a look at this chart: https://static2.feelgoodcontacts.net/images/astigmatism-degree.jpg https://static2.feelgoodcontacts.net/images/astigmatism-degr... Basically all the lines should look equally sharp when your vision is corrected. In my case - if I don't wear glasses and move close enough to see it clearly - the horizontal lines have a shadow going upwards, where as the vertical lines are sharp. The shadow is strongest on the 0 degree and 180 degree lines, meaning I have an astigmatism at one of those. This doesn't tell you what the correction should be, but it tells you if you have it.