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Published on: 4/7/2025

What Are the Possible Causes of Sudden Blurry Vision in Both Eyes?

Sudden blurry vision in both eyes can happen because of different health problems like a mini-stroke, high eye pressure, inflammation of eye nerves, or issues with the blood vessels in the eyes.

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Explanation

Experiencing sudden blurry vision in both eyes can be worrying. Here are some possible causes:

1. Mini-Stroke (Transient Ischemic Attack - TIA): A mini-stroke occurs when blood flow to the brain is briefly blocked. It can affect the parts of the brain that help you see, leading to sudden blurry vision.

2. Acute Glaucoma: This is when the pressure inside your eye suddenly increases. High eye pressure can cause pain and make your vision blurry very quickly.

3. Optic Neuritis: This is inflammation of the optic nerve, which sends images from your eyes to your brain. Inflammation can cause your vision to become blurry or even lead to temporary vision loss.

4. Retinal Vascular Occlusion: This happens when the blood flow in the tiny blood vessels of the retina is blocked. Blocked blood flow can cause sudden changes in your vision, making it blurry.

5. Hypertensive Retinopathy: High blood pressure can damage the blood vessels in your retina, the part of your eye that senses light. Damage to these blood vessels can result in blurry vision.

If you or someone you know suddenly has blurry vision in both eyes, it's important to seek medical help right away. A doctor can determine the cause and provide the necessary treatment to protect your vision.

(References)

  • Gupta N, Nusbaum J. Points & Pearls: An evidence-based approach to abnormal vision in the emergency department. Emerg Med Pract. 2020 Apr 1;22(4):e1-e2. PMID: 32259422.

  • Raharja A, Whitefield L. Clinical approach to vision loss: a review for general physicians. Clin Med (Lond). 2022 Mar;22(2):95-99. doi: 10.7861/clinmed.2022-0057. PMID: 35304366; PMCID: PMC8966835.

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