Fluctuating blood sugars are known to cause fluctuating vision. There is a correlation between the change in blood sugar levels and the ability of the crystalline lens in your eye to maintain a sharp focus. High blood sugar weakens the blood vessels in your eyes. Diabetic retinopathy affects blood vessels in the light-sensitive tissue called the retina that lines the back of the eye. It is the most common cause of vision loss among people with diabetes and the leading cause of vision impairment and blindness among working-age adults. People with type 2 diabetes should have an exam as soon as diabetes is diagnosed and then every year. If your eye exam results are normal, your doctor may consider follow-up exams less often. For example, you may have an exam every two (2) years. But if you are diagnosed with retinopathy, you may need more frequent eye exams.

Can Diabetes Affect Your Eyes?
http://www.webmd.com/eye-health/eye-problems#1

Diabetes and blurry vision
http://www.healthline.com/health/diabetes/blurry-vision#1

Diabetes And Diabetic Retinopathy: Q&A
http://www.allaboutvision.com/askdoc/diabetes.htm

Diabetic Macular Edema (DME)
http://www.webmd.com/diabetes/guide/diabetic-macular-edema#1

Diabetic Retinopathy
https://www.aoa.org/patients-and-public/eye-and-vision-problems/glossary-of-eye-and-vision-conditions/diabetic-retinopathy

How Diabetes Causes Blindness
http://www.webmd.com/diabetes/tc/how-diabetes-causes-blindness-topic-overview#1

How You Can Cut Your Risk of Diabetic Retinopathy
https://www.healthcentral.com/article/how-you-can-cut-your-risk-of-diabetic-retinopathy

Sufferers of both Type 2 diabetes and sleep apnea could lose eyesight within four years
https://www.sciencedaily.com/releases/2017/07/170703120936.htm

The Eye Exam That Can Save Your Sight
https://www.healthcentral.com/article/the-eye-exam-that-can-save-your-sight

Difference between an Ophthalmologist, Optometrist and Optician
https://www.aapos.org/terms/conditions/132

Eye conditions related to Diabetes
http://www.rnib.org.uk/eye-health-eye-conditions-z-eye-conditions/understanding-eye-conditions-related-diabetes

Diabetes and Blurry Vision: What You Need to Know
https://www.healthline.com/health/diabetes/blurry-vision


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