What causes blurred vision? 84 possible conditions

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Hazy vision is a visual disturbance resulting in being unable to see clearly and may be due to any number of causes.

Alternative Names

Blurred vision, blurry vision, cloudy vision, mist over eyes, misty vision, dull vision, foggy vision, hazy vision


Hazy vision, cloudy vision, blurred vision are all problems with seeing clearly. Any change in your normal vision is cause for concern and is a good reason to call a doctor for an examination. There are many different reasons why your vision can be cloudy or hazy – but the good news is most of them are treatable. The sooner you get treatment, the better your vision will be – so don’t delay!

Recommendations for Eye Examinations

  • Once before entering school (age 4-5)
  • Once between the ages of 20-29
  • Two times between the ages of 30-30
  • Every two years ages 40-64
  • Over age 65 annually
  • People who need prescription lenses or have a history of eye disease need to follow the schedule recommended by their doctor

Associated Diagnoses

  • Cataracts
  • Eyestrain
  • Contact lens problem
  • Nearsightedness
  • Astigmatism
  • Diabetic retinopathy
  • Infection
  • Trauma
  • Corneal injury or abasion
  • Migraine headache
  • Glaucoma
  • Transient ischemic attack (TIA)
  • Stroke
  • Retinal detachment
  • Retinitis
  • Macular degeneration
  • Keratitis
  • Optic nerve problem
  • Presbyopia (normal part of the aging process: need for reading glasses)


Depending on the diagnosis or condition, the problem can be treated with corrective lenses, medication or surgery.

Call your provider

If you have a change in your vision, see your provider. If you are planning to have a baby, make sure you are current on your German measles (rubella) vaccine. If you have never had German measles, be vaccinated at least 3 months prior to getting pregnant. If you do contract German measles (rubella) while pregnant, be certain to have your baby’s eyes examined by an eye specialist after birth as recommended because being exposed to German measles can make a baby vulnerable to cataracts and other eye problems.

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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 of abnormal cells in the brain, which can increase pressure in the skull. Risk factors for brain tumors include age, race, family history, and exposure to chemicals and radiation.

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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 that causes distorted, fuzzy, or blurry vision as a result of an irregular curve in the eye's lens or 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

A surge in neuron activity causes seizure, resulting in a host of physical symptoms such as muscle contractions, visual disturbances, and blackouts. Partial (focal) seizures affect just one area of the brain.

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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.
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