Thank you for that additional information.
First of all you should let your doctor know that you have lowered your viibryd dose due to electrical brain shock side effects. She could probably find a different medication that works better for you....
What you are experiencing could be a form of migraine. Of course, it might be from a sinus problem that is made worse when your blood pressure spikes during orgasm.
While I do not believe that this is a sign of anything horrible I'd make sure to mention it to your doctor on your next visit. Also it would be helpful if you started keeping notes on when this happens, how long it lasts, any associated symptoms etc and share these data with your doctor.
At this point I do not believe you need any sort of extensive workup or imaging study, although having a complete eye exam by an ophthalmologist would be a good idea.
Does this make sense to you?
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Dr. Rick MD FACS