Hey Jenn, I skimmed through your other thread as well but didn't see any more detail about this specifically. Any idea what serious condition it could be? I ask because I only ever get visual auras on the right side. Never ever on the left. My auras are different every time, too. A few times it's been variations of the psychedelic swirly stuff, once it looked like a Windows 95 screensaver (that multi-colored cube that turns into a ball and back into a cube? It looked just like that!). But other times, it's been more like, someone turned the lights off or on, but again only on the right side. Or once suddenly things got much more crisp and had more contrast, but only on the right. It's extremely disconcerting when it happens! My GP and GI are both aware and neither seems overly concerned (they both seem to think it's just another fun symptom of IBD, and I never got migraines/auras until IBD came along so I agree). That's slightly worrying that it could potentially be something more serious though.
"A migraine aura involving your vision will affect both eyes, and you may see:
Flashes of light
Zigzagging patterns
Blind spots
Shimmering spots or stars
Retinal migraine:
Sometimes, ocular migraine is used as a synonym for the medical term "retinal migraine." A retinal migraine is a rare condition occurring in a person who has experienced other symptoms of migraine. Retinal migraine involves repeated bouts of short–lasting, diminished vision or blindness. These bouts may precede or accompany a headache.
A retinal migraine — unlike a migraine aura affecting vision — will affect only one eye, not both. However, most often, loss of vision in one eye isn't related to migraine. It's generally caused by some other more serious condition. So if you experience visual loss in one eye, be sure to see an eye specialist."
http://www.mayoclinic.org/diseases-...e/expert-answers/ocular-migraine/faq-20058113
"
Retinal migraine
Vasospasm of the retinal circulation or ophthalmic artery is thought to be the cause of the amaurosis of ocular migraine.1–5 Ischaemic optic neuropathy6 and permanent arcuate scotomas3 may occur after ocular migraine and retinal vascular occlusions have been reported in conjunction with cerebral7 and ocular migraine.5,8
Retinal vasospasm may be associated with underlying systemic diseases such as SLE5 and antiphospholipid syndrome.5,9 In older patients it may be associated with giant cell arteritis, polyarteritis nodosa, and eosinophilic vasculitis.1 Other associated haematological abnormalities include low protein C and S levels and positive antinuclear antibodies.5"
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1772006/
"
Vasospasm can have many different causes and can occur in a variety of diseases, including infectious, autoimmune, and ophthalmic diseases, as well as in otherwise healthy subjects. We distinguish between the primary vasospastic syndrome and secondary vasospasm. The term "vasospastic syndrome" summarizes the symptoms of patients having such a diathesis as responding with spasm to stimuli like cold or emotional stress. Secondary vasospasm can occur in a number of autoimmune diseases, such as multiple sclerosis, lupus erythematosus, antiphospholipid syndrome, rheumatoid polyarthritis, giant cell arteritis, Behcet's disease, Buerger's disease and preeclampsia, and also in infectious diseases such as AIDS. Other potential causes for vasospasm are hemorrhages, homocysteinemia, head injury, acute intermittent porphyria, sickle cell disease, anorexia nervosa, Susac syndrome, mitochondriopathies, tumors, colitis ulcerosa, Crohn's disease, arteriosclerosis and drugs. Patients with primary vasospastic syndrome tend to suffer from cold hands, low blood pressure, and even migraine and silent myocardial ischemia. Valuable diagnostic tools for vasospastic diathesis are nailfold capillary microscopy and angiography, but probably the best indicator is an increased plasma level of endothelin-1. The eye is frequently involved in the vasospastic syndrome, and ocular manifestations of vasospasm include alteration of conjunctival vessels, corneal edema, retinal arterial and venous occlusions, choroidal ischemia, amaurosis fugax, AION, and glaucoma. Since the clinical impact of vascular dysregulation has only really been appreciated in the last few years, there has been little research in the according therapeutic field. The role of calcium channel blockers, magnesium, endothelin and glutamate antagonists, and gene therapy are discussed."
http://www.ncbi.nlm.nih.gov/pubmed/11286896
One thing that I was told when I was dealing with these was to always check if I only saw it in one eye or both by closing each eye to see if the vision is affected in both. If it's only in one eye then I was told that they would need to figure out the underlying cause.