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American Academy of Opthamology: "Corneal Arcus," "What is Vitamin A Deficiency?"
American Optometric Association: "Diabetic Retinopathy."
MayoClinic: "Graves' Disease," "Brain Aneurysm," "Myasthenia Gravis," "Liver Disease," "Eye Twitching."
National Stroke Associaton: "What is stroke?"
NIH National Eye Institute: "Facts About Diabetic Eye Disease."
NIH: "Graves Disease."
NIH Office of Dietary Supplements: "Vitamin A."
Reviewed by Alan Kozarsky, MD on August 08, 2016
This tool does not provide medical advice. See additional information.
THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for general informational purposes only and does not address individual circumstances. It is not a substitute for professional medical advice, diagnosis or treatment and should not be relied on to make decisions about your health. Never ignore professional medical advice in seeking treatment because of something you have read on the WebMD Site. If you think you may have a medical emergency, immediately call your doctor or dial 911.
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