What Does It Mean If You Have Blurry Vision In One Eye?

Having blurry vision in one eye can be a startling realization. However, there are common reasons that can explain this occurrence. This article will discuss some of the causes of blurry vision in one eye. We’ll also mention the corresponding symptoms and some appropriate treatment options.

Blurry Vision In One Eye: What Can Cause It?

Having blurry vision in one eye is not generally a cause for concern. While the eyes work as a pair, one eye can be affected more by many conditions. That said, it’s essential to seek the advice of a medical professional if you notice sudden changes in your vision. This can be a sign that something is wrong and requires prompt treatment.

The most common cause of blurry vision and most eye problems are refractive errors. This means that the clear lens inside your eye doesn’t focus light correctly onto your retina. This results in a blurry or unfocused image. There are several types of refractive errors, such as not seeing objects up close, at long distances, or indeed at any distance (astigmatism.)

Sometimes, blurry vision in one eye can be due to an eye infection. For older people, blurry vision can result from cataracts: clouding of the usually transparent lens inside the eye.

Other causes for blurry vision include:

  • Age-related macular degeneration
  • Diabetes, which can cause glaucoma or diabetic retinopathy
  • Stroke
  • Cluster headaches
  • Migraine
  • Conjunctivitis, a common type of eye infection also called “pinkeye.”

Common Symptoms Accompanying Blurry Vision In One Eye

Blurry vision is not the only thing people notice, and some may experience headaches and eye strain due to the incorrect focusing between the two eyes.

A refractive error can worsen headaches for people who are prone to cluster headaches or migraine. Visual disruptions often accompany migraine, and people may see shapes, lines, colors, sparkles, or flashes of light.

People with cataracts may have hazy, blurry vision and find it difficult to read, drive or see at night. The good news is that cataracts are possible to treat. Modern surgical techniques allow doctors to replace the clouded, aging lens with a clear artificial one.

Symptoms of an eye infection include swelling, itchiness, and redness of the eyes. There may also be pain, and a discharge around the eyes, tear duct, or eyelid. Eye infections need to be treated promptly by a medical professional.


Seeing an ophthalmologist (a doctor specializing in eye treatment and surgery) is the best way to diagnose and treat blurry vision in one eye. Contemporary surgical techniques have progressed to the point that many corrective surgeries can be performed as outpatient procedures. It’s normal to have anxiety and hesitation surrounding eye treatment, but a qualified doctor can help resolve your problem before it can get any worse.

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