Hello and thanks for your question.
Please allow me to ask you a few questions so I can better understand the situation.
1. What signs or symptoms did you have that led to this diagnosis of blood behind the eyeball?
2. Has there been any trauma or surgery to the eye?
3. Do you take blood thinners such as coumadin/warfarin, ibuprofen, aspirin, vitamin E, garlic, ginseng, ginko biloba?
4. Overall, how is the vision (good, poor, in between)?