Blurry Vision: Diabetes and Other Causes

  • High blood sugar, or hyperglycemia can affect your eyes, causing blurred vision.
  • Blurry vision is one of the symptoms of diabetes due to fluid leak into the lens of the eyes.
  • Other causes of blurry vision include glaucoma, cataracts, dry eyes, low blood pressure, and digital eye strain, among others.

Diabetes is a metabolic disease that disables your body from producing, or producing enough insulin and efficiently using it. The insulin’s function is to break down and distribute sugar all over the body.

Lack of insulin causes hyperglycemia or blood sugar build up.

Causes of Blurry Vision:

Diabetes causes retinal disorders such as macular edema and proliferative retinopathy.

1.When you experience color changes and wavy vision, you may be having macular edema.  The macula is responsible for sharp central vision.  When liquids or fluids leak into it, you develop blurry or fuzzy vision.

2. When you have night vision problems or when you can see spots or floaters, you are having Proliferative retinopathy.  This is caused by blood vessels leaking into the center of your eye.    

3.  Glaucoma can also cause blurry vision.  This is when pressure damages the optic nerve. Diabetes doubles the risk of having glaucoma for adults. Other symptoms of glaucoma may include: nausea or vomiting, reddening of the eyes, tunnel vision or loss of peripheral vision, eye or ocular pain, and halos around lights.

4. Cataracts can also cause blurry or cloudy vision. Diabetics develop cataracts at a younger age than older people who do not have diabetes. Symptoms of having cataracts include: glare or halos around lights, sensitivity to light, faded colors, double vision in just one eye, and lack of improvement after getting prescription or new glasses.

5.  Other common causes: certain prescription drugs, low blood pressure, dry eyes, nearsightedness, and eye infection, injury or inflammation.

6.  Digital eye strain from spending too much time on handheld devices or computer monitors, not maintaining proper distance from the monitor.  Headache, neck or shoulder pain, and dry eyes are common symptoms of digital eye strain which can be corrected by taking breaks and maintaining proper distance and posture.

7.  Immune system disorders like lupus and multiple sclerosis can cause blurry vision.

When to see your doctor

Having diabetes means a higher level of risk in developing eye problems. Have yearly comprehensive eye exams including dilation. Tell your doctor about your symptoms, treatment, and medications.

Blurry eyes can be fixed through eye drops or prescription glasses if the problem is simple but if you are diabetic, the treatment may be complicated depending on your test findings and doctor’s recommended treatment plan or diabetes management plan.

Having blurry vision is an indication of an uncontrolled or mismanaged diabetic treatment plan.  It is important to consult with your doctor first. However, if you experience sudden, extreme blurred vision, black spots in vision, holes in your vision, and or flashes of light, immediately go to the emergency room and have them call your doctor.

Source: Healthline



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