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A Complete List of Causes and Symptoms Behind Blurred Vision

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Your vision starts to blur if any of the eye’s components, whether it’s the optic nerve, retina, or cornea, fail to work properlyBlurred vision takes time to develop as it is often the result of a long term condition. When your vision lacks sharpness, objects may seem blurry. Sure, this might be a symptom of farsightedness and nearsightedness. Neverthelessblurring of vision can have various other causes. 

Causes of Blurred Vision 

  • Stroke 

A stroke can damage nerves that transfer the information to the eyes. Changing eyesight can be a sign of stroke. 

  • Eye Infection 

Eye infections, including viruses, fungi, or bacteria, can blur vision. Furthermore, the infection can cause swelling, soreness, and watery eyes.  

  • Wet Macular Degeneration 

The macula is located in the center part of the retina behind your eye. This region is responsible for the color and details of the image your eyes make. Macular degeneration can blur the central vision. 

  • Hyphema 

When you encounter an injury in your eye, the pool of blood spreads in front of the eyeball, which is called hyphema. This causes severe pain and blurs the vision. 

  • Pregnancy 

During pregnancy, changes in the hormones change the thickness of the cornea. Furthermore, women may face dry eyes during pregnancy. Both of these conditions cause blurry eyes. 

  • Astigmatism 

When the cornea has an irregular shape, light rays fail to focus on a single point. Without proper image formation on the retina, you cannot visualize the image. 

  • Myopia 

Myopia or near-sightedness is a condition in which you cannot see the objects far from you. This condition is a result of improper image formation on the retina. 

  • Migraine with Aura 

Migraine attacks usually cause blurriness of the vision. This condition usually affects only one eyeIt is possible to experience aura without headache. 

  • Uveitis 

Your eye contains numerous pigmented structures, namely the uvea. When this region of your eye starts to hurt or inflates, your eyes can’t create a clear image of the object. The condition is Uveitis. 

Symptoms of Blurred Vision 

The symptoms of sudden blurry vision may vary depending on the causes. Here are some of the conditions that you may or may not develop with blurry vision: 

  • Double vision 
  • Redness
  • Photophobia 
  • Pain 
  • A spot in your vision 
  • Discharge from the eyes when you have an eye infection 
  • Conjunctivitis will result in itchy eyes. 
  • Speech difficulty and stroke 
  • Nausea and headache if the cause is migraine 


Blurry vision can have various other causes, such as high blood sugar, corneal abrasioneye strain, and many more. If you experience blurry vision, you must consult with your healthcare provider for a diagnosis to find the underlying cause. 

You must contact the ER immediately if you experience pain, sudden blurry vision, eye injury, spots in your vision, etc. A health care professional will suggest a treatment plan, depending on the condition and severityHence, don’t put off scheduling an appointment with your doctor if you experience any changes in your vision.

Written by Total Focus

At Total Focus Optometry, we’ve spent the last 70 years building meaningful relationships with our patients and their families. From routine eye exams to contact lens fittings we offer our patients a variety of services to meet their eye care needs.

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