Well, in my opinion, astigmatism cannot cause eye twitching, so you do not need to worry about it too much. First, according to some experts, astigmatism is a kind of visual condition which is related to its shape. And then, because of it, it can result in an eye that has two different powers. In that condition, blurry vision can occur, and it can be the most common symptom of astigmatism. For other symptoms, you should know that shadow images, eye muscle spasms, eyestrain, and headaches can be possible too. For the treatments, you can wear contact lenses to correct it. So you can have a try.