Sounds to me like an ocular migraine. One of the symptoms there is seeing auras (often jagged half circles). It's a neurological "disorder". Look it up.
Depending on your age or health it could be an eye migraine or a transient ischemic attack (TIA) due to disease of the eye, brain, heart of blood vessels.
See an Eye MD and see your personal physician.
JCH MD
i am 17 years old, and i looked up ocular migraine
im pretty sure this is what i have, how can it be treated?
Depends on how often its a problem. Many people have episodes once every 6 to 12 months. that doesn't require RX. Some have several times that does. Treatment is with medication to either abort and attack or medicines taken regular that prevent an attack from occuring. I suggest you go in to see your family MD
JCH MD