Seeing a strange figure in vision durig exercise

[Hayley8]

Hello, when I exercise, specifically when I do jogging while standing, I see a pattern of lines in a circular pattern, they're whitish, I don't know if this would classify as flashes, It feels like they're in sync with my heart beat. I've first noticed this 9 years ago when I was running a marathon and pushed myself hard. I told my opthalmologist about it at the time and he saw my retina then told me it's nothing. Lately it started to bother me, I keep thinking it may not be normal. I would like to say I have -5 myopia and that I see a lot of things more than usual, like blue field entoptic phenoma, flick phosphenes.. I've had an eye exam just recently with full dilated exam and everything looked fine. I did some research and I found few similar complaints, also a study called "Exercise-Induced Transient Visual Events in Young Healthy Adults" the spoke like figure described in there for case 1 & 2 seem like exactly what I see. I'm considering seeing an opthalmologist again to ask about this specifically, I would love some insight from the experts here.

[JohnHaganMD]

You have to start out with a complaint like this seeing an Eye MD ophthalmologist and an Internist, Cardiologist or very good GP to be sure you do not have eye or cardiovascular disease

[Hayley8]

Thank you for the reply doctor, do you have any suggestions if they don't find anything wrong?

[Hayley8]

I also notice this pattern sometimes when I cough or sneeze, but not always, thank you for the insight.

[JohnHaganMD]

Pressing on the eye or a cough or sneeze can produce pressure and excite the retinal rods causing a light reflex/pattern. It's called an entoptic phenomena.  read the section on that in wikipedia.  Don't look for other causes until you have seen the eye MD and a general medical MD

[Hayley8]

I would like to add that I see it while looking at a blank wall and when the pace of the exercise is high. Thank you doctor.