Hello and thanks for your question.
I can empathize with your plight right now and I know it must be scary. It sounds as though there is significant blood in the jelly that's in the back of the eye. A significant amount of blood in that jelly (vitreous) can certainly decrease the vision.
If there was a retinal detachment associated with this tear and the detachment involved the center of the retina which is responsible for your fine, central vision (it is called the macula), then there is a chance that the vision may not improve much at all.
If it is just the blood and there was no retinal detachment, then it can take several weeks for the blood to settle down. Things you can do to foster that settling include sleeping with the head of your bed elevated, not using ibuprofen, motrin, advil, aleve or aspirin (unless medically necessary) as those medicines thin the blood and may propagate this bleeding, taking it easy and not straining against a heavy load and not bending down with your head below your waist.
If the blood does not settle after a few more weeks then it may be necessary to have surgery to evacuate that blood.
Does that make sense and did that address your concerns?
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My opinion is solely informative and does not constitute a formal medical opinion or recommendation. For a formal medical opinion and/or recommendation you must be examined by your doctor.