CRAO stands for Central Retinal Artery Occlusion and it's different from wet AMD:
What it is: A blockage of the central retinal artery. It’s sometimes called an “eye stroke. It causes sudden vision loss. All wet and dry macular degeneration patients are given an office OCT test scan each office visit. It's the gold standard test to measure the health of the retina. The scans are saved and compared to see the progress of an injection or treatment or progression. Ultrasound (B-scan ultrasonography) that you were given is a diagnostic test, not a wet AMD treatment. It’s mostly used when: The retina can’t be seen clearly (for example, because of a cataract or blood The doctor wants to check for retinal detachment, tumors, or unusual causes of swelling. Sometimes, to get a different view of structures like veins/arteries if the OCT scans aren’t giving enough information .Sometimes like in my case my eye scan was the same as the time before but I had more real cloudiness in my actual vision this time that the scan did not catch. I've never had an eye ultrasound. It's good that they gave you this ultrasound test. That's why the Mayo Clinic is effective in treating diseases because they do all the tests necessary to make a differential diagnosis.