How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Dr. James Your Own Question

Dr. James
Dr. James, Board Certified Ophthalmologist
Category: Eye
Satisfied Customers: 2282
Experience:  Eye Physician and Surgeon
20222826
Type Your Eye Question Here...
Dr. James is online now
A new question is answered every 9 seconds

I have had a black/grey half moon come up on my left eye -

Resolved Question:

I have had a black/grey half moon come up on my left eye - five times now in past 3 weeks; also one of double vision that lasted about 4-5 min. What could be causing this?
Submitted: 4 years ago.
Category: Eye
Expert:  Dr. James replied 4 years ago.
Hello,

Does the black/grey half moon come down like a curtain then disappear? or is there all the time?
What was the result of the carotid ultrasound?
Do you have any vision problems?
What other medical problems do you have?
Customer: replied 4 years ago.

It starts at the bottom and possibly covers half the eye - lasts around a minute or so - 5 occurences in last three weeks.

The ultrasound turned out ok - slight plaque but not enough to do anything.

I can tell my eyes have changed - that eye has torn retina so I am a little used to things waving around in the eye, but this was different - was solid and came up from bottom.

No other vision problems - good eye examination few months ago. Lenses did not need change.

I have had many surgeries, have aorta valve replacement (porcine), shoulder replacement, spinal fusion, diabetes (2) take glyburide, and thyroid cancer - gland removed in 1966 - long time ago - on levothyroxine for that.

Expert:  Dr. James replied 4 years ago.
The symptom you are describing is called amaurosis fugax. The plaques of your carotid artery is likely flaking off small bits into the blood stream. When it travels into the eye, it temporarily impedes blood flow and causes the half-moon grey that you see. This same process can happpen if pieces go to your brain and impedes blood flow to specific parts of the brain, causing numbness, weakness, slurred speech. In this case, it is called a TIA (transient ischemia attack).

The symptoms are concerned because it can lead to a stroke. That is why your eye doctor was so concerned. Because of your heart history, your doctor may also order an echocardiogram to check for clots to see if that may be a cause of your symptoms. Your primary care doctor will discuss your risk factors for stroke and put you on the appropriate medicines.

Remember to press the green ACCEPT button. It was a pleasure helping you with your question. Best wishes to you. Feel free to ask any additional questions.
Dr. James, Board Certified Ophthalmologist
Category: Eye
Satisfied Customers: 2282
Experience: Eye Physician and Surgeon
Dr. James and other Eye Specialists are ready to help you
Expert:  Dr. James replied 4 years ago.
Thank you for the feedback.

To answer your question, surgery is not always the best option. There is a risk of stroke during the surgery as well, so you have to weigh the benefits of the surgery. If the blockage is minimal (less than about 60-70% usually), then medicines can help stabilize the plaque to lower the risk of a stroke rather than risk surgery.
Customer: replied 4 years ago.

Is this also the reason for the 'seeing double' - before the double vision, I could feel a pull across my face - possibly from eye to eye. It was like elastic being pulled. I gather that this is the same problem as the black spot?

I thank you for answering so soon - and your clear explanation.' but we kinda forgot about the double vision - I am assuming that the cause is the same - except for the pull I felt.

Expert:  Dr. James replied 4 years ago.
Did you have the double vision along with the grey vision?
Do you have double vision now?
Customer: replied 4 years ago.

No, it had that a couple days ago - only the one time, but it lasted about 4-5 min. (so it seemed). Funny part is I thought I would look in a mirror and see if I would be seeing something weird in the mirror - that would explain the greyh/black - and all I saw were 4 eyes - it was wierd. Has not happened again - (this was 5 days ago). I have had the grey-black again at dinnertime - seemed larger.

Thank you for answering again.

Expert:  Dr. James replied 4 years ago.
It is likely related. The blood flow to the muscles of your eyes can also be impeded and cause the eyes to be misaligned -- resulting in your double vision. If you are having increasing frequency of symptoms, you should notify your primary care doctor.
Dr. James, Board Certified Ophthalmologist
Category: Eye
Satisfied Customers: 2282
Experience: Eye Physician and Surgeon
Dr. James and other Eye Specialists are ready to help you
Customer: replied 4 years ago.

Dr. James, - I had my mri yesterday and late afternoon my internist's assistant called and said' everything is ok,' brain and blood flow' ' I asked what my next step was - she said, she didn't know what the problem was so went to the dr., and he said go to my opthalmologist - who was the one who sent me to my internist. I have appointments with both the end of this month. The carotid artery exam was done by opthalmologist who said, slight plaque, but not a bad problem.

So - I don't know why I should go back to either one - evidently I don't have to do anything. I had the black/grey once on Fr. and that has been the only time in past week. Maybe it will all disappear.

Expert:  Dr. James replied 4 years ago.
Thank you for the update. You should ask your internist if he suspects your visual symptoms are due to emboli. If so, the next step should be an echocardiogram to make sure there are no clots in your heart as the source of your emboli.

If you have not have recent blood work, then I would recommend lipid tests and CBC (complete blood count). You internist may consider starting you on a daily aspirin. If there is a confirmed clot in your heart, then you may need to be on a blood thinner such as coumadin.

If the grey is persistent and still there, you should notify your ophthalmologist for a repeat eye examination as there may be limited blood flow to your retina.


Edited by Dr. James on 10/10/2009 at 5:07 PM EST
Dr. James, Board Certified Ophthalmologist
Category: Eye
Satisfied Customers: 2282
Experience: Eye Physician and Surgeon
Dr. James and other Eye Specialists are ready to help you

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • I feel so much better today, and upon further investigation believe that there is a chance that the responses I got saved me from a serious, even life threatening situation. I am very grateful to the experts who answered me. Susan O. USA
< Last | Next >
  • I feel so much better today, and upon further investigation believe that there is a chance that the responses I got saved me from a serious, even life threatening situation. I am very grateful to the experts who answered me. Susan O. USA
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, NC
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther Woodstock, NY
  • Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know. Robin Elkton, Maryland
 
 
 

Meet The Experts:

 
 
 
  • Dr. Dan B.

    Board Certified Ophthalmologist

    Satisfied Customers:

    2903
    Eye surgeon experienced in cataracts, glaucoma, retina & neuro-ophthalmology
< Last | Next >
  • http://ww2.justanswer.com/uploads/DoctorDanB/2010-6-7_6228_just_answer_profile_picture_60_pixels.jpg Dr. Dan B.'s Avatar

    Dr. Dan B.

    Board Certified Ophthalmologist

    Satisfied Customers:

    2903
    Eye surgeon experienced in cataracts, glaucoma, retina & neuro-ophthalmology
  • http://ww2.justanswer.com/uploads/anupamadesai/2010-04-13_122313_Dr._A.S.Desai_new_photo.jpg Dr. A.S. Desai's Avatar

    Dr. A.S. Desai

    Ophthalmologist

    Satisfied Customers:

    1903
    MS Ophthalmology with 11 years of surgical expereince
  • http://ww2.justanswer.com/uploads/gsokoye/2009-10-28_181751_Dr._Stan.JPG Dr. Stan's Avatar

    Dr. Stan

    Ophthalmologist

    Satisfied Customers:

    895
    Johns Hopkins Fellowship Trained, Certified and Licensed Medical Physician and Surgeon
  • http://ww2.justanswer.com/uploads/eyemd/2009-04-07_180315_pic.jpg Dr. Stevens's Avatar

    Dr. Stevens

    Ophthalmologist

    Satisfied Customers:

    629
    Board Certified Ophthalmologist
  • http://ww2.justanswer.com/uploads/CO/CorneaDoc/2012-2-18_0390_photo6.64x64.jpg Dr. Susan's Avatar

    Dr. Susan

    Ophthalmologist

    Satisfied Customers:

    217
    Board Certified & Fellowship trained eye surgeon.
  • http://ww2.justanswer.com/uploads/neuph94/2009-10-11_164729_gif_pic.GIF Dr. JP's Avatar

    Dr. JP

    Ophthalmology, Oculoplastic Surgery

    Satisfied Customers:

    28
    Harvard Medical School, Massachussetts Eye and Ear
  • http://ww2.justanswer.com/uploads/JA/JACUSTOMERjcufyksv/2012-3-13_44825_crop3.64x64.jpg Dr-Trace's Avatar

    Dr-Trace

    Board Certified Ophthalmologist

    Satisfied Customers:

    26
    Board Certified in General Ophthalmology