What causes blurred vision? 79 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.


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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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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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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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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Corneal Abrasion

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

A minor scratch to the eye's cornea is called a corneal abrasion. It can be caused by dust, contact lenses, or other foreign objects, and can sometimes develop into a serious eye condition.

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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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Brain Aneurysm

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

An aneurysm in the brain is a weak area in an artery in the brain that bulges out and fills with blood. It can be unpredictable and life-threatening, and can cause extremely serious conditions.

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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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Conjunctivitis (Pink Eye)

Conjunctivitis, or "pink eye," is an infection or swelling in the eye area that causes inflammation of the conjunctiva, giving the eye a red or pink color.

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Type 1 Diabetes

Type 1 diabetes is a chronic disease. People with type 1 have high levels of glucose in their blood. Glucose is a natural sugar that your body uses as a source of energy. It is obtained from food. Extra glucose i...

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Diabetic Retinopathy

Diabetic retinopathy is a condition that occurs as a result of damaged blood vessels of the retina in people who have diabetes. Diabetic retinopathy can develop whether you have type 1 or type 2 diabetes. While you ma...

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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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Uveitis is swelling of the middle layer of the eye, which is called the uvea. The uvea supplies blood to the retina. The retina is the light-sensitive part of the eye that focuses the images you see and sends them t...

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Diabetes Overview

Learn about diabetes symptoms, causes & treatments.

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Stroke Overview

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

A stroke is a medical emergency where part of the brain is deprived of oxygen. There are four major kinds of stroke: cerebral thrombosis, cerebral embolism, subarachnoid hemorrhage & intracerebral hemorrhage.

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Type 2 Diabetes Overview

Type 2 diabetes, is a common chronic metabolic disease that leads to abnormally high levels of blood sugar in the blood. This blood sugar is also referred to as "glucose."

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Scleritis is a disorder in which the outer surface of the eye becomes severely inflamed. The sclera is the outer protective layer of the eye. In scleritis, the scleral tissue becomes inflamed and red. The condition ca...

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Presbyopia is an eye condition in which your eye slowly loses the ability to quickly focus on objects that are close. It is a disorder that affects everyone people during the natural aging process of their eyes. Whe...

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Allergic Conjunctivitis

When your eyes are exposed to substances like pollen or mold spores, they may become red, itchy and watery. These symptoms mean you have allergic conjunctivitis. Allergic conjunctivitis refers to eye inflammatio...

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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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