Hello,
Thank you for your query at DoctorSpring.com
I understand your concern.
It looks like a tortuous vessel, which can be because of a life style disease , like hypertension / diabetes or rarely a bleeding disorder , you need to consult a retina specialist , no doubt about it, as we need to correlate the symptoms with findings.
Also, get CBC checked to evaluate any bleeding disorder, and get your RBS done too.
Hope this was helpful,
Regards.