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What causes blurred vision? 84 possible conditions

What Does Hazy Vision Mean?

Clear, sharp vision can help you navigate the world, from reading traffic signs to making sure you don’t miss a step in your home. Hazy vision can make you feel like someone has put a filter over your eyes and life is no longer in focus.

What Are the Symptoms of Hazy Vision?

Hazy vision can affect your entire line of sight or just parts of your vision. This could include your peripheral vision, or how you see to the right or left of your field of vision. You can also experience hazy vision in only one eye. Other ways to describe hazy vision include clouded or dim vision.

What Are the Causes of Hazy Vision?

There can be many causes of hazy vision. Some examples of common causes are:

  • abrasions to the cornea
  • cataracts
  • corneal opacification (scarring)
  • infectious retinitis
  • macular degeneration related to age
  • migraine headaches
  • optic neuritis
  • retinitis pigmentosa
  • retinopathy, such as diabetic retinopathy 
  • stroke
  • trauma or injury to the eyes

People with diabetes can also experience hazy vision if their blood sugar levels fluctuate significantly.

When Do I Seek Medical Help for Hazy Vision?

You should call 911 and get immediate medical attention if your hazy vision comes on suddenly and you have any of these symptoms:

  • severe headache
  • difficulty speaking
  • loss of muscle control on one side of your body
  • facial drooping
  • trouble seeing

These symptoms are similar to those of stroke.

Additional symptoms that may need immediate treatment include severe eye pain or sudden vision loss. 

Other symptoms of hazy vision or vision that slowly worsens may require a visit to your primary care doctor or eye care specialist.

How Is Hazy Vision Diagnosed?

Your doctor will diagnose the cause of your hazy vision by first taking an inventory of your symptoms. Examples of questions they may ask include, “When did you first start noticing the hazy vision?” and “What makes the hazy vision worse/better?” Your doctor may also ask about your personal medical history as well as a family history of eye conditions. 

Your doctor may want to do a physical examination of your eyes next. They may test your vision by asking you to read an eye chart. Other eye tests can include:  

  • intraocular pressure
  • ophthalmoscopy
  • refraction
  • slit-lamp examination

Your doctor might want to do blood testing to determine if bacteria is in the blood or to obtain your white blood cell count if they suspect there could be an infection.

How Is Hazy Vision Treated?

When hazy vision is the result of a decrease in blood sugar, treatments include consuming foods high in fast-acting sugars. This includes juice and candies. You can also take glucose tablets that will increase your blood sugar quickly. 

Other treatments for hazy vision can depend on the condition that’s causing your symptoms. These could be eye drops, laser surgeries, or medications to control the underlying conditions.

How Is Hazy Vision Prevented?

While it’s not always possible to prevent some causes of hazy vision, taking steps to care for your eyes can help prevent lifestyle-related causes. 

Here are some tips for healthy vision:

  • Always wear sunglasses that provide broad-spectrum protection when you’re going out in the sun.
  • Eat a diet that has eye-healthy nutrients. You can find these in dark, leafy greens like spinach and kale as well as in foods high in omega-3 fatty acids, like albacore tuna, trout, and halibut.
  • Don’t smoke.
  • Undergo regular comprehensive eye exams, especially if someone in your family has a history of an eye disease.
  • Wash your hands before putting on or taking out your contacts to reduce infection risk.
  • Wear protective eyewear when operating heavy machinery or engaging in activities like painting and home repairs. 

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See a list of possible causes in order from the most common to the least.


Visual Impairment

When a condition or disorder temporarily or permanently interferes with the normal sense of sight, this is called a visual disturbance.

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Head Injury

This condition is considered a medical emergency. Urgent care may be required.

A head injury could be an injury to the brain, skull, or scalp. It can vary in severity depending on the cause. In some cases face swelling can be a sign of a head injury.

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Stroke Overview

This condition is considered a medical emergency. Urgent care may be required.

A stroke (a "brain attack") is a medical emergency in which part of the brain is deprived of oxygen. This occurs when an artery that supplies oxygenated blood to the brain becomes damaged and brain cells begin to die.

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Low Blood Sugar (Hypoglycemia)

This condition is considered a medical emergency. Urgent care may be required.

Also known as hypoglycemia, low blood sugar can be a dangerous condition. Hypoglycemia is rare in people who are not suffering from diabetes, the chronic disease that affects the body's ability to regulate blood sugar...

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Cataracts are dense, cloudy areas that slowly form in the lens of the eye. They are common in older people, but can also be present at birth or caused by medications, disease, trauma, or radiation.

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Glaucoma is a term for several eye conditions that can damage your optic nerve. It has many types, and over time it can lead to vision loss.

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Age-Related Macular Degeneration (AMD)

Macular degeneration is the most common form of vision loss in people age 50 or older. It occurs when the macula, an important part of the retina, becomes damaged.

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Orthostatic Hypotension

Orthostatic hypotension (also called postural hypotension) is a sudden fall in blood pressure that occurs upon standing quickly.

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High Blood Pressure Overview

High blood pressure (hypertension) increases your risk for heart attack, stroke, coronary heart disease, and other serious health problems. Left untreated, high blood pressure can damage blood vessels and vital organs.

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Migraine with Aura

Migraine is a disorder characterized by repeated attacks of severe headache. Symptoms include throbbing or pulsating pain, usually on only one side of the head, and can last between four hours and three days.

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Brain Tumor

A brain tumor is a collection or mass of abnormal cells in your brain. A brain tumor can be cancerous (malignant) or non-cancerous (benign).

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Myasthenia Gravis

Myasthenia gravis is a neuromusclar disorder. It results in weakness of the skeletal muscles, and can cause double vision and drooping of the eyelid.

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Multiple Sclerosis Overview

Multiple sclerosis (MS) is a chronic autoimmune disease that affects the central nervous system. MS can cause varying symptoms that appear with a wide range of severity, from mild discomfort to complete disability.

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Strabismus is a disorder in which the eyes do not line up in the same direction. People with strabismus cannot look at the same object or place with both eyes at the same time. The condition is often referred to a...

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Astigmatism is a common vision problem caused by an error in the shape of the cornea.

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Peripheral Neuropathy

Peripheral neuropathy occurs when nerves malfunction because they're damaged or destroyed. You'll notice a tingling, numbness, or weakness, and possibly sweating, constipation, or diarrhea.

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Eye Emergencies

This condition is considered a medical emergency. Urgent care may be required.

An eye emergency is when chemicals or a foreign object gets in the eye, or an injury affects the eye area. Emergencies require immediate medical attention to help prevent permanent vision damage.

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Partial Seizures

The human brain works by sending electrical signals through neurons, which are nerve cells. A seizure occurs when there's a surge in this electrical activity.

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Nearsightedness (Myopia)

Nearsightedness, or myopia, is a very common condition in which nearby objects are visible but faraway objects are out of focus and difficult to see.

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Mini Stroke (Transient Ischemic Attack)

This condition is considered a medical emergency. Urgent care may be required.

During a transient ischemic attack (TIA, mini stroke) blood stops flowing to the brain for a short period of time. TIA doesn't kill brain cells like a stroke does. TIA causes symptoms that mimic those of a stroke.

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This feature is for informational purposes only and should not be used to diagnose.
Please consult a healthcare professional if you have health concerns.