Thanks for your question.
I think you are referring to vitreous hemorrhage.
Please read this article for a detailed explanation of this condition:
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Thanks for your reply.
I am going to opt out and refer your question to an eye specialist.
Was this in one or both eyes? Did it affect your vision? Did you have any other symptoms (like numbness or weakness in arm or leg)? Is your eye(s) back to normal now? Is the swelling gone?
First, the fact that your central acuity is still 20/20 is a good sign. What you seem to be describing is loss of some peripheral vision. This is usually caused by optic nerve problems (you had mentioned swollen optic nerves). Conditions that affect both optic nerves simultaneously is less common. These include hypertension, clotting diseases, pseudotumor cerebri, and diabetes.
I'm sure that they have performed blood tests to look into the clotting diseases. You may also need a spinal tap to rule out increased intracranial pressure (pseudotumor cerebri). If this is from hypertension or diabetes, controlling these diseases will eventually allow the body to absorb the blood. Sometimes, you may need laser treatments or injections of steroids into the eye to resolve the blood (especially if it is extensive).