Why Is My Vision Blurry?
This article will focus on the causes of blurred vision and when you should seek medical care. It will also describe the symptoms and treatment options for the condition.
There are many reasons why your vision may become suddenly or gradually blurry.
Blurred vision can result from various mild to serious diseases, disorders, and conditions. While many cases of blurred vision are due to problems with the eyes, blurred vision can also be due to neurological and autoimmune disorders.
Certain vision changes can indicate a medical emergency, which can lead to loss of sight. You should not ignore temporary blurred vision.
Common vision problems that are associated with blurry vision include:
With astigmatism, light rays do not focus clearly at one point on the retina due to the unequal curve of the eye’s surface. According to the American Academy of Ophthalmology, astigmatism is common, but doctors do not know why eye shape can differ from person to person. Symptoms of astigmatism include squinting to see more clearly, blurry vision, eyestrain, and headaches.
You can correct mild astigmatism by wearing prescribed glasses or contact lenses.
Dry eyes are a common condition in which the eyes can not lubricate themselves properly with natural tears. According to the
Treatments for dry eyes include over-the-counter eye drops, lifestyle changes including stopping smoking and limiting screen time, and even surgery to fix loose lower eyelids, though this is not common.
Eye irritation refers to the uncomfortable feeling of dry, itchy eyes or the feeling of grit in your eyes. Prolonged screen time or common colds may be causes of this.
Farsightedness, also known as hyperopia, occurs when the eyes do not refract light properly. This condition results in distant objects being more focused than near objects.
Eyeglasses are the most common way of correcting farsightedness.
With nearsightedness, also known as myopia, eyes focus better on near objects rather than distant objects. This condition occurs due to your eyes not focusing light properly on the retina.
People with myopia face a higher chance of a detached retina, a serious issue that can cause blindness. Symptoms include eyestrain, headaches, and squinting.
Presbyopia is a common, gradual loss of your eye’s ability to focus on near objects due to aging.
Medical professionals should evaluate any vision change. Blurred vision can be a symptom of a serious disorder, and you should not ignore even temporary vision changes.
Your retinas are a light-sensitive tissue in the back of your eye. Retinal detachment happens when the tissue pulls away from the back of the eye.
Retinal detachment is a medical emergency. You should seek immediate medical care if you have any symptoms, including small dark spots that float across your eye, flashes of light in either eye, or a dark shadow in the middle of either side of your eyes.
According to the
It is important to recognize the symptoms of a stroke so brain damage can be minimal.
A brain tumor can push enough on the optic nerve, and blindness can occur. The loss of vision caused by a brain tumor happens gradually. It begins with blurry vision, double vision, or a blind spot. However, as it grows to push on the optic nerve, it will result in great vision loss.
Your retina can tear away from the back of your eye if a head injury occurs. Vision can become blurred in one eye.
After a head injury, the retina may tear away from the back of your eye and lose its blood supply. If that occurs, your vision in one eye will become blurred.
Traumatic brain injuries may affect your vision by damaging parts of the brain involved in visual processing.
Retinoblastoma is a cancer of the eye that starts in the retina, the very back part of the eye. It is the most
Without treatment, the tumors can take over the eyeball. Cells can break off from the main tumor and create more tumors elsewhere in the eyes.
These tumors might block the channels that let the fluid circulate within the eye, raising the pressure inside the eye. This pressure can cause glaucoma, which can lead to pain and loss of vision in the affected eye.
Some autoimmune diseases result in blurred vision, including:
- Multiple sclerosis: This disease affects the brain and spinal cord, causing weakness, coordination, balance difficulties, and other problems. It can often cause vision problems.
- Myasthenia gravis: This is an autoimmune neuromuscular disorder that causes muscle weakness. Myasthenia gravis affects the voluntary muscles of the body, especially those that control the eyes, mouth, throat, and limbs.
- Systemic lupus erythematosus: This is a disorder in which the body attacks its healthy cells and tissues. Slow, progressive vision loss can also result in more rapid vision loss from lupus.
Several different diseases, disorders, and conditions that cause blurry vision include:
A cataract is a loss of transparency in the lens of your eye. Cataracts interfere with vision and usually develop as a result of typical aging.
This condition is an inflammation of the eye surface, and symptoms can include blurred vision.
According to the
Macular degeneration can cause loss in the center of the field of vision. In dry macular degeneration, the center of the retina deteriorates. With wet macular degeneration, leaky blood vessels grow under the retina.
Optic neuritis is a condition that affects the eye and your vision. It occurs when your optic nerve is inflamed. The optic nerve sends messages from your eyes to your brain so that you can interpret visual images.
Retinal vessel occlusion
Retinal vein occlusion happens when a blood clot blocks the vein. Sometimes it happens because the veins of the eye are too narrow. Retinal vein occlusion can lead to sudden and permanent vision loss.
Diabetic eye disease
Over time, diabetes can cause damage to your eyes that can lead to poor vision or even blindness.
Inflammation usually happens when your immune system is battling an infection.
Depending on the cause, blurred vision can begin suddenly and disappear quickly, such as when your eyes are refocusing on a far object after reading or sun overexposure. Blurred vision can also occur in sudden, severe episodes, such as blurred vision from a detached retina or head trauma.
Encephalitis can be a mild disease. However, people most at risk of developing serious encephalitis include infants, young children, the elderly, and people with weakened immune systems.
In some cases, blurred vision may occur with other symptoms that might indicate a serious or life threatening condition that doctors should immediately evaluate in an emergency setting.
Seek immediate medical care if you, or someone you are with, have any of these life threatening symptoms:
- blurred vision after head trauma
- change in the level of consciousness or alertness, such as fainting or unresponsiveness
- behavior or mental status change, such as confusion, delirium, lethargy, hallucinations, and delusions
- slurred speech or inability to speak
- high fever of over 101ºF
- memory loss
- numbness or paralysis on one side of the body
- seeing halos around lights or having blind spots or distorted vision
- severe headache
- sudden change in vision, loss of vision, or eye pain
Treatment for blurred vision depends on its cause in the first place.
Be sure to look out for other symptoms of serious illnesses. Seek immediate medical care if your blurred vision worsens or occurs with other serious symptoms, such as slurred speech.
Blurry vision can be the result of various illnesses or disorders. It can be gradual or sudden and occur with other symptoms.
Depending on how sudden or gradual the blurry vision is, there can be a variety of reasons why you are experiencing it. It may be a minor issue such as staring at a computer screen for too long or a medical emergency such as a stroke or detached retina.