I’m not sure if this is the right place to post this, so please redirect me if its not. I’m 19 with no known health conditions and recently (about 1 week ago) have begun to see a rather large white, flickering circle in the upper part of my vision when I close my eyes and look down. When my eyes are opened and I look down my upper peripheral vision seems to vibrate. I was worried this could have something to do with retinal tearing or detachment so I went to an opthalmologist. They performed a dilated eye exam and said everything was fine and there is no cause for concern or further examination. However, they could not give a reason for me seeing this white circle/vibrating in peripheral vision when looking down, so I am still very worried. If anyone has any idea what this could be caused by or what I should do, I’d appreciate it. I’m very anxious about this and don’t know what to do and if there’s any cause for concern.