the one thing that really does tend to show up well upon just a CT IS blood. so if you did indeed have any level of brain bleed, it would have shown it then. i still think, and i do agree totally with that jenny told you by the way, that this just DOES really sound like a 'migrane syndrome" with possible involvment of the c spine too. i too have been getting migranes since like the second i hit puberty back in the 70s. there were no actual abortives for migrane back then either so it was just go to a dark room, pack the head in ice and ride out the like 12 hour pain and the recycling of that aura that can severely impact vision. my pre migrane auras ALWAYS hit the vision hard, always. do things ever look rather jagged and like a bit of a strange "light show" along with the blurry vision, or is this just blurred vision only? the actual migrane itself,well, i just prayed for god to please come and take me every time around like hour five of this brand of hell. it is just that bad.
the one thing i would seriously do here is try and obtain an MRI,with a contrasting agent on your brain(would show a heck of alot more IN the brain and down to that vascular level too like a CT can't) and also getting the MRI on that c spine as well. while it is not typical with some c spine issues, you CAN actually have vision problems if something either IN or on your actual spinal cord is actually affecting particular spinal tracts within your cord(could be caused by herniations, bone spurs or even certain types of congenital malformations that are just a big possible to have within that cord from birth. like vascular lesions among others). or your sympathetic nervous system being involved at that cord or outside column level too(the sympathetic chain that simply runs along both sides of the column) also, within the brain, there just are quite a few different things that can also affect vision too. espescially ANYTHING that could be impacting that cerebellum or something impacting the optic nerves too.
once you get the actual MRIs done here that alone would show what could be there that may be crating alot of different types of symptoms. but most importantly, it would kind of dictate what your very next steps should be based upon any hard findings or nothing that shows up, like do you see a neurosurgeon or what jenny mentioned with the neuro op, these specialists are really amazing when it comes to brain problems that impact vision, either from trauma or incidents/events that can simply be there or occur within the brain. spinal cord injury/findings can very much also impact vision, mine did with a horners syndrome. but i just do have a strong feeling just based upon what has taken place as far as symptoms and what occured with you that "something' is going on either within the brain area or within that c spine which could even be at that cord level.
just obtaining the two areas tested with a contrasted MRI could show alot of what could simply be behind all this. and like has been already mentioned, a possible major type of classic migrane syndrome. mine have put me thru absolute hell at certain times in my life. migranes can and do change somewhat with age and shifting hormone levels too. there just ARE alot of different individual types of real 'triggers' that if we actually are prone at all to migrane can and will usually be there. i have actally IDed about 7 seperate food triggers for mine alone. and i still even at 48 years old, keep finding new ones here. just insane really.
any real true Dx is made by looking at the overall symptoms, and trying to track them back to the actual generators with testing and ruling out things along the way. having the two areas MRIed would just really really help here in actually finding the possible true scource or sources of your head pain and other symptoms. its just how a real solid dx is made. right now, those two areas would simply be the "most likely" sources of possible generators so they just do need to be looked at more closesly with testing.
i do hope they can get things rolling here as far as the MRIs done asap for you(with a contrasting agent for sure). have you actually tried ANY of the migrane 'abortive" type of meds for the head pain? did anything actually work for this? good luck and please keep us posted. FB