Well I have a daughter who is 13 turning 14 in Oct. But for a while now she has been having trouble with her eye sight. She already wears glasses and has her shots. But thats not all. Sometimes her chest begins to hurt and the pain worsens when she tries to move or breathe. I noticed this when she flinched during one of those times. But her problem with her eyesight happens randomly. She says her vision slowly starts turning black while her eyes are wide open. At first I was skeptical until we were passing each other in the hall and began a conversation. She began to wobble and then placed her hand on the side of her head while blinking rapidly. This has happened more often since then and I'm worried. if there is something wrong with her health please let me know.