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

Visual disturbances interfere with normal sight. The various types of visual disturbances may be caused by several conditions and disorders. Some are temporary and can be relieved with treatment. However, some can b...

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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, also called age-related macular degeneration (AMD), is a disease that causes vision loss. According to the Cleveland Clinic, this is the most common cause of vision loss in Americans over the ag...

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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.

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Migraine with Aura

Migraine is a disorder characterized by repeated attacks of severe headache. A migraine headache causes throbbing or pulsating pain, usually on only one side of the head. These headaches are often associated wit...

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Brain Tumor

A brain tumor is a collection (or mass) of abnormal cells in the brain. The skull is very rigid and the brain is enclosed, so any growth inside such a restricted space can cause problems. Brain tumors can b...

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Myasthenia Gravis

Myasthenia gravis (MG) is a neuromuscular disorder that causes weakness in the skeletal muscles, which are the muscles that the body uses for movement. It occurs when communication between nerve cells and muscle...

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Multiple Sclerosis Overview

Multiple sclerosis (MS) affects an estimated 300,000 to 400,000 individuals in the United States and over two million worldwide. Although it is considered a relatively rare disease, MS is of particular interest recentl...

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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. With astigmatism, the front surface of the eye (the cornea) or the lens of the eye has an irregular curve, which can change the wa...

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Peripheral Neuropathy

Your peripheral nervous system connects the nerves from the brain and spinal cord (central nervous system) to the rest of the body, including the arms, hands, feet, legs, internal organs, mouth and face. The job o...

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Eye Emergencies

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

An eye emergency occurs anytime you have a foreign object or chemicals in your eye, or when an injury or burn affects your eye area. Remember you should seek medical attention if you ever experience swelling, redness...

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Partial Seizures

The human brain operates by conducting electrical signals through neurons (nerve cells). A seizure occurs when there is a surge in this electrical activity. This causes a host of physical symptoms such as muscl...

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Nearsightedness (Myopia)

Nearsightedness is an eye condition in which you can see nearby objects clearly, but faraway objects appear fuzzy or blurry. Nearsightedness is also called myopia .Nearsightedness is extremely common and very treatable...

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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), also known as a mini stroke, blood stops flowing to the brain for a short period of time. However, a mini stroke doesn't kill brain cells like a stroke does. A mini strok...

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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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