Well, generally speaking, it is possible to have episcleritis because of eye strain. And also, you should know that there are some effects on eyes because of eye strains. According to some experts, when you have eye strain, it will just have strain on the eye muscles and the facial and scalp muscles, and then pain and headache may be possible. In some cases, your vision can be worse. For long term, it can be bad. And to treat it, you can just have some eye exercises, which can strengthen eye muscles. Also, pay more attention to the time you use eyes. Anyway, just be careful about it.