Having episodes of scintillating scotoma when i panic. doctor gave me prozac (fluoxetine) and told me it will go away that anxiety is cause it. is this correct?

Not directly.: Your scintillating scotomas need workup. Once MRI and lab results are done most common diagnosis is ophthalmic migraine. Anxiety can trigger migraine but it does not cause it. So if this is ophthalmic migraine it will decrease in number of attacks as the your panic attacks decrease. So indirectly it will decrease or abort the scintillating scotomas. But you must see a neurologist for workup.

Panic Treatment: An opthalmologist will address the scotomas. Regarding panic: cognitive behavior therapy for panic very helpful. Med:talk with your md about slowly increasing ssri dose (1/2 of lowest dose per week) up to highest dose you can tolerate. Anxiety disorders usually need twice the dose(prozac60-120mg)&twice the treatment time(8-12wks) as it does for mood disorders to respond to ssri treatment.

Blind panic: In addition to dr. Cribari's and dr. Sajjadi's excellent answers: scintillating scotomas are the result of electrical activity in the occipital cortex of the brain, usually associated with migraine (with or without headache) but sometimes a lesion. Some people can trigger the occipital cortex directly through a panic attack (blind panic) and may faint.After workup, most likely your meds will work.