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I'm seeing a quarter moon shape in my left eye only. 3rd…

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I'm seeing a quarter...

I'm seeing a quarter moon shape in my left eye only. 3rd time this week it has happened. It looks like a prism. I had a stroke in May and cataract surgery in January. Some times it will last 5 minutes, sometimes it will last 30 minutes. Do I need to call an eye doctor or my neurologist?

Doctor's Assistant: When was the last time you had your eyes checked? In general, how has your vision been lately?

Had an eye exam in mid August

Doctor's Assistant: Anything else in your medical history you think the doctor should know?

Other than this vision is good just what I mentioned earlier

Submitted: 8 months ago.Category: Eye
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Answered in 2 hours by:
11/10/2017
Eye Doctor: Dr. Rick, Board Certified MD replied 8 months ago
Dr. Rick
Dr. Rick, Board Certified MD
Category: Eye
Satisfied Customers: 12,168
Experience: Ophthalmology since 1994 with Retina sub-specialty interest
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Hi. I'm Dr. Rick and I have two decades of ophthalmology and retina surgery experience. I'm online and happy to answer your question today.

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Eye Doctor: Dr. Rick, Board Certified MD replied 8 months ago

What you are describing is consistent with ocular migraines, a condition that I not only treat in my office but that I have been dealing with personally for decades.

A typical migraine headache starts with shimmering lights, often times they surround a blurry area or have dots or jaggedly lines associated with them. They tend to progressively increase in intensity and sometimes march across the visual field causing difficulty with reading. Many times this is then accompanied by nausea, irritability, sensitivity to bright lights and/or loud noises. After the onset of the lights (called scintillating scotomas), the headache typically starts and the light show tends to progressively go away.

Many people can have this migraine phenomenon WITHOUT the headache; it is called an acephalgic migraine. Some people even start having these late in life, or may have had a few much earlier in life that behaved differently and haven't had any for decades and then begin to have them; this is not uncommon. A family history of migraines is often present as well.

This is nothing to worry about. It is not a sign of a more serious underlying condition, brain tumor or anything like that. If the episodes become so frequent that they are bothersome there are medicines that can be used to decrease their frequency or stop an episode once it has started.

I, personally, have been suffering from this condition for almost 30 years. I almost never got the headaches after the visual effects.

There was one time, I was in the middle of a very delicate retina operation, when an attack started. After a few moments I lost most of my central vision and the inferior part of my visual field. I, calmly, removed my surgical instruments from the patients eye and we all sat around in the OR for 15 minutes until my vision returned. Other than that my ocular migraines have not really caused me any significant problems :o)

Does this make sense to you?

Don't forget to mash the positive feedback button for me...the one labeled "excellent" is the most fun to push by far ;)

It's safe for you to press the positive feedback button now if you so desire. And, never fear, even after you press that button I don't go up in a puff of smoke -- I'll still be right here to continue helping you, but, as I do work for tips, I want to make sure you are happy before rating me.

Dr. Rick MD FACS

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