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Question: From Dallas, Texas, USA: I normally don't have very low or high blood sugars. I am well controlled and my last A1c was 5.5, with my range being 5 to 6.5, mostly in the mid 5s. I take oral Glucophage and a tiny bit of insulin, four units of NPH and four units of Humalog in the evening with dinner. Every now and then, I do get nighttime hypoglycemia. I did last night and then a couple of weeks ago, usually not that frequent. Anyway, the last two times I woke up with the normal sweating, etc., but, with my eyes closed, I saw a bright green halo which persisted until I got up. After I ate glucose tablets, all the symptoms went away. Two days ago, I saw my eye doctor and we did the normal eye mapping. I have a three year baseline and no changes, plus a peripheral vision test; nothing there was abnormal. So, I wonder what is going on. I know this is a strange question, but it's really bugging me. Answer: I have never encountered this particular symptom when hypoglycemic, nor have I ever heard it from any of my several thousand patients with diabetes. I suspect your are experiencing what is known as a "phosphene," the artifactual perception of light (colored or otherwise), resulting from insufficient glucose supply to your retina and/or optic nerve. Other than being annoying, it is almost certainly of no real significance. PC DTQ-20081023132507 Original posting 6 Nov 2008 Posted to Other and Hypoglycemia

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			Jump to a new section --[ Getting Around ]-- Home Page What's New Privacy Policy Search --[ People ]-- Family Support Network Adults with Diabetes Care Photos Chat Rooms Conferences Kids with Diabetes Parents Parent Humor Scholarships and Financial Aid Grandparents Humorous Tidbits Jobs Mailing Lists CWD Forums Poetry and Art Videos Polls Quilt for Life Surveys Blogs --[ Clinic ]-- Ask the Diabetes Team Alternate Site Testing Alternative Treatments Care Suggestions CWD Español Diabetes Basics Diabetes at School 504 Plans Diabetes Camps Diabetes Dictionary Insulin Pumps Nutrition Podcasts Presentations Products Product Marketplace Sports Studies Warning Signs --[ Sources ]-- News and Information Diabetes Advocacy Links to Other Web Sites Press Releases Regional Information Services Support Groups --[ Feedback ]-- About CWD Advertise Awards Contribute Your Experiences Disclaimer Letters to the Editor Logos and Linking Share our Brochures

Last Updated: Tuesday April 06, 2010 15:10:15
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