Thank you, I am sorry I did not find your answer the first before my last email. I am also suffering from severe cataracts. My first cataract surgery is this Thursday.
Nothing last forever. Red blood cells live about 120 days then they die. So the blood will eventually go away. Sometimes it leaves no damage, if there is a great deal of blood it can cause permanent scar formation. Since you passed the exam by a retina ophthalmologist physician MD, it indicates the blood was not a threat to your vision. Generally the bleeding caused by high blood pressure is extremely small pin-points of blood (called dot and flame shaped hemorrhages).
Your case points out how important a regular annual eye examination by a physician eye MD (ophthalmologist) is. Many unsuspected problems such as diabetes, HBP, anemia, thyroid disease, high cholesterol, multiple sclerosis, Marfan's syndrome, blood disorders, brain tumors show up on "routine" exams by eye physicians (Eye MDs).
JCH III MD ophthalmologist