Dr. A.S. Desai : Hello,Welcome to Pearl.com
Dr. A.S. Desai : Are you available for chat now?
Customer: Yes, looks my my full question did not come through.
Dr. A.S. Desai : What are your present symptoms? Do you have headache/vision problem?
Dr. A.S. Desai : Yes, it looks like only one part of the question is seen here.
Customer: Vision, in the last two weeks I have woken up on three occassions and only see white. It will last for a minute or less and then my eyes go back to normal.
Dr. A.S. Desai : Just got to know that you have past history of migraine and that you are due for a vision test followed by an eye test.
Dr. A.S. Desai : Ok.
Dr. A.S. Desai : Do you have any history of hypertension or diabetes?
Customer: I take metropol for a heart condition but I do not have hypertension or diabetes.
Dr. A.S. Desai : Is the brief visual loss expereinced in both eyes or only in one eye?
Dr. A.S. Desai : Such a brief visual loss of vision can occur with a very brief reduction of blood supply to the eye. However it is usually experienced in one eye.
Customer: Have you heard of this happening before?
Dr. A.S. Desai : It is very unlikely to be due to migraine as the visual symptoms last for more than few minutes to hours.
Customer: I have had the migraine aura's and this wasn't like that.
Dr. A.S. Desai : Yes, it makes sense to get the eyes examined in detail by a retina specialist just to look out for any possible ocular cause. But I guess it would need more than an eye exam to get down to the diagnosis. Probably a CT scan or MRI of the brain would help or even a carotid doppler ( it is a non-invasive test which helps to know if the blood flow through the carotids are normal or not).
Dr. A.S. Desai : Sometimes reduced blood flow through the carotids cause a similar reduced blood flow to the eye thus causing a brief loss of vision. But bilateral visual loss is very uncommon. Other conditions which can cause similar symptoms include postural hypotension ( sudden change in posture causing a dip in blood pressure), severe anemia , papilledema and so on.
Customer: Would a drop in blood pressure or an increase in blood pressure also cause you to feel shakey as well? Not visably shakey but internally shaking ... like having to much caffiene? Two of the times that I had the vision problem I also felt shakey.
Dr. A.S. Desai : Yes, a sudden drop in blood pressure can make a person feel uncomfortable or light headed or dizzy.
Customer: So it might be a good time to get the blood pressure looked at.
Dr. A.S. Desai : Yes , a regular monitering of the blood pressure would be very helpful. However these variations in blood pressure are more often experienced after a meal.
Dr. A.S. Desai : I guess you need to bring this to the notice of your cardiologist who may want to investigate further and look for any cause of ischemia ( reduced blood flow).
Customer: So, really the CT scan or MRI might be the best bet after I find out tomorrow the results of a vision test. I don't usually eat anything after 6:30 pm, I just drink water.
Dr. A.S. Desai : Yes, carotid doppler should be the first choice followed by MRI or CT scan if need be.
Customer: Could sleep apnea cause reduced blood flow if you're not getting enough oxygen?
Dr. A.S. Desai : Inadequate oxygen due to sleep apnea would have resulted in more of systemic symptoms( ivolving the whole of the body)rather than ocular alone.
Customer: Thank you for all your assistance, at least now I'll be more informed when I go in to have my visions test and deciding where to go from there.
Dr. A.S. Desai : You are most welcome. I wish you well. Take care.
Dr. A.S. Desai : Please feel free to ask follow up questions if any.Thank you and best wishes.It was a pleasure to have answered this question.Experts are credited only if a positive rating is given and not otherwise. So do remember to give your rating. A positive rating is what I aim for and we can continue to interact till you get a satisfactory response. An excellent feedback and /or bonus are most welcome and appreciated.Views expressed are for information purpose only and cannot substitute a visit to an ophthalmologist