Maybe there is something wrong with your eyes. I suggest you to have your eyes checked immediately. Some people will complain about that they can see flashes in their vision. It is a starting sigh of some eye problems. Only the doctor can diagnose your eyes and figure out your problem.
Sweetie, you can have your eyes checked if you are suffering from this from time to time. It can be a warning of some potential eye problems. But sometimes we can't describe the symptoms that we are suffering from. For example, some people will get confused after they turn off their telephone and begin to sleep because they can see green color in their vision which we won't see in day time. But that is a common problem and we don't need to worry about that. So, the best way is to have your eyes checked by an eye doctor immediately.