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Is blurred vision an alarming sign of Diabetes?

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posted Jul 12, 2016 by Swaroop

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1 Answer

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Yes, high blood sugar is an alarming sign of Diabetes. The high amounts of blood sugar in the body causes the lens of the eye to absorb water and swell by itself. Since the lens gets swollen, the ability to focus on any object greatly reduces. It could be the reduction in identifying the sharpness of the image, inability to differentiate between boundaries etc. 


When to see the doctor?

  • If a person is diagnosed with Type 1 diabetes, it is advised to see the doctor after 5 years of diagnosis
  • If a person is diagnosed with Type 2 diabetes, it is advised to see the doctor soon after diabetes diagnosis.
  • During pregnancy, it is suggested to undergo a round of check-up to avoid any complications later. It could be one of the symptoms of gestational diabetes which might not have been diagnosed yet in the patient.



  • Since high levels of blood sugar are the reason for blurring vision, bringing the limit back to normal is the solution. The normal ranges are 70-130 mg/dl before meals and 180 mg/dl after meals. The vision gets rectified once the sugar levels are within range.
  • Sometimes low blood sugar levels can also be the reason for blurring vision and can be treated by bringing the levels back within the range, through food or glucose intake.



  • Keeping a check on sugar levels. 
  • If the blurring happens often, it is a sign that the sugar levels are fluctuating, so care should be taken to  maintain it steady. Frequent fluctuations can sometimes cause irreversible damage. 
  • Controlling diet
  • Exercise

Image source webmd




answer Jul 12, 2016 by Swaroop
Similar Questions
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I'm almost 30 and I am in decent shape. I eat healthy and work out, but I recently was diagnosed with type 2 diabetes. Now I have noticed changes in my vision, sometimes varying by day or by week.
I currently use light reading glasses while on my computer. I have noticed blurriness at different light levels and distances. What bothers me is that one day I may see fine, and the next day I don't. Can diabetes cause this? 

My eye doctor said he couldn't do anything for me until after I control my blood sugar level and keep it at a specific level for extended periods of time. Why do blood sugar levels affect the eyes and vision this way? Thank you in advance for your input and advice

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