I have to go to the eye doctor very soon because my vision is getting a little blurry. My friend tells me that I may have an astigmatism.
I would like to know what causes astigmatisms? Was it something that I did? I have allergies so I tend to have itchy red eyes and I rub them a lot. Is that how I got an astigmatism (or whatever it might be)?
Most Helpful Guy
An astigmatism occurs when the surface of the cornea (the lens in your eye which covers the pupil and filters light rays into your eye) is not spherical. This means it will refract the light rays differently than a normal, spherical eye. You may notice that you have trouble seeing horizontal lines and vertical lines at the same time. This is because of the deformation of your cornea, as the vertical spherical plane is offset from the horizontal spherical plane.
Sorry if that was a bit confusing, I'm a physics major and we're studying light. The eye happens to be a incredible optical device, but when it's malformed it can cause difficulties with sight.
It's unlikely that you yourself caused your astigmatism, although it is possible. If you were to rub your eyes hard enough to bend the cornea you could induce an astigmatism. I would suggest not rubbing your eyes so much, even if they do itch (sorry about that, I have allergies too and they suck).
If you do have an astigmatism, whatever the cause, you will need to have some sort of vision correction in order to see properly. This means glasses, contacts, or laser surgery. (I can give you a run-down of how the glasses will correct your vision, too, if you'd like to hear it :P)0