Blurring Vision in One Eye

Ocular problems can develop from a number of causes, consisting of conditions that specify to the eye as well as systemic illness that might lead to suddenly blurred or patchy vision in one eye as a symptom. For individuals who experience this situation on a regular basis, it is highly suggested to look for medical attention in order to determine the cause. This can lead to the proper treatment method being used to deal with the issue.

Causes for Blurring Vision in One Eye

Blurred vision can be the result of an eye problem, however can also be brought on by such aspects as infection, corneal abrasion, or neurological concerns. When blurred vision in one eye develops in time, it may be associated with changes to the shape of the eye or the cornea. These must be analyzed by an eye doctor, and might be eased by a brand-new prescription for glasses.

blurry vision in one eye

When blurred vision in one or both eyes happens unexpectedly and is accompanied by pain in the eye, then it might be connected with a physical impact to the eye.

  • Bacterial infections – these can cause patchy vision and are often accompanied by severe pain. In these cases, the bacteria which have colonized on the surface area of the eye are slowly damaging tissue, and if they are left ignored, can lead to permanent vision disability or loss of vision. This will need ophthalmic antibiotics for treatment, and remainder of the eye during the healing process.
  • Corneal abrasions – these are scratches which are on the actual surface of the eye, and can be the outcome of a variety of causes. Whatever from grit and sand to strands of hairs that are whipped into the eyes can be the reason for a corneal abrasion. Although this condition should likewise get medical attention, the recovery procedure may be assisted through keeping the eye closed and covered while the surface tissue heals.
  • Foreign items – detritus that ends up being lodged in the eye is the most typical reason for blurred vision that is accompanied by pain. Depending upon the seriousness of the trauma, this might or may not require professional intervention. In most cases, people have the ability to flush the debris with making use of an eye wash, and minimize the immediate pain with making use of a cold compress over the closed lid.

Blurred Peripheral Vision in One Eye and Sudden Ocular Occlusion

When there is no area pain during an occurrence of sudden patchy vision, the causes for the concern might be internal instead of external irritants. Some systemic issues that result in the beginning of blurred vision in one of your eyes can include:

  • Vascular issues – consisting of high or low high blood pressure, or obstruction of a blood vessel. This might hold true if the condition presents during workout or through position altered, and is accompanied dizziness, lightheadedness, or a ringing in ears.
  • Thyroid conditions – this can impact blood sugar levels in the body, and can result in an absence of correct nutrients being distributed throughout the system. This will also impact hormonal balances, which can affect eyesight with blurry vision in one eye, green lines, and tiredness.
  • Diabetes – this condition will also affect the blood sugar balance in the body, however can further affect vision through damage that occurs to nerve endings, and hence misshapes the details that is transmitted from the eye to the brain. This can lead to blurred vision, short time periods of patchy sight, and tunnel vision in one eye.
  • Sinus pressure – severe pressure in the head can likewise impact eyesight. This may be a result of pain perception but can likewise arise from sinus pressure affecting blood circulation to the capillary of the eyes.
  • Tiredness – blurred vision, fatigue, and emotional or physical fatigue can all be correlated. The occurrence of vision concerns with fatigue might be an element of neurological effects of tiredness, which can consist of hallucinations and irregular sight in one eye, but can also be the result of strain to the muscles of the eye.

Some of these conditions such as diabetes, vascular concerns, and thyroid problems will require medical interventions, since the underlying causes can lead to other health issue. Blurred vision that is the result of sinus pressure or fatigue might require rest in order to reduce the symptoms. Pressure in the head reacts positively to heat, and oftentimes, a hot compress across the forehead, eyes, and bridge of the nose can offer relief and bring back normal vision.

Migraines and Blurred Vision in One Eye

Migraines will often be accompanied by blurred vision in one eye, both as a symptom and factor of the neurological condition. For people who experience migraines as a pain event of the head, blurred or spot vision is often a result of the tension that is formed throughout the facial muscles. Rest and darkness will frequently assist to reduce both factors of the condition, as will medications that can lower nerve inflammation or reduce the muscle tension and spasms.

Some migraines are a real visual occasion, and are not always accompanied by pain. Ocular migraines often result in irregular vision in one eye that is similar to looking through a clear kaleidoscope, and can also produce sensations of dizziness, moderate queasiness, and disorientation. This condition can in some cases be corrected by medications that are likewise used to combat anxiety or that are used to treat neurological conditions. Rest and relaxation are likewise suggested for these occurrences of blurred vision in one eye.

Can Spinal Problems Cause Blurred Vision in One Eye?

Some back issues can impair vision, although this is dependent upon where along the spinal column the injury has actually happened. Most frequently, blurry or patchy vision can be the outcome of a nerve ending that has actually become pinched, specifically in the cervical spinal area. Tumors and cysts along the spine can also add to this condition, and may need surgery for alleviation of the vision problems in one eye.

Anxiety and Blurred Vision in One Eye

States of extreme stress and stress can likewise be the reason for blurred vision in one eye. Sometimes, this is the result of extended exposure to a highly demanding state, and the blurred vision results due to constriction to circulation as well as a response to the high levels of hormones that are present during stress. Breathing exercises and relaxation can regularly assist in minimizing the issue, and will likewise provide as good coping mechanisms for anxiety.

Causes of Sudden Vision Blurring in One Eye

Frequently, treatment for these conditions will clean up your blurred vision. Keep in mind, though, that unexpected changes to your eyesight aren’t normal, so if they take place, see your doctor immediately.


The condition raises your risk for an eye disease called diabetic retinopathy. Over time, high blood sugar level can damage the small blood vessels in your retina, the part of your eye that senses light. That can result in swelling in a part of the retina called the macula, new and unwanted capillary growing in the eye, and bleeding inside the eye.

Along with sudden blurry vision, diabetic eye disease may likewise cause:

  • “Floating” spots in your field of view
  • Long-term loss of vision

Early treatment is the best way to fend off permanent damage. To protect your eyes from diabetes by getting them examined at least as soon as a year.


Among the hidden signs that you’re having a stroke is an unexpected, painless change in vision. You might have blurry or double vision.

Call 911 right away if you have either of these changes and other stroke indication, such as:

  • Lightheadedness
  • Face sagging
  • Loss of balance
  • Slurred speech or other issues speaking clearly
  • Weakness or numbness in one arm


If you’re pregnant, you should not take sudden blurry vision lightly. It could be an indication of preeclampsia, a harmful condition marked by very high blood pressure and protein in your urine. Preeclampsia takes place in women who have never had hypertension before and generally happens late in pregnancy, usually after 20 weeks. It can have severe, life-threatening impacts on you and your baby.

Preeclampsia may not cause any symptoms, but blurry vision and other sight changes such as seeing flashing lights or spots might be ideas that you have it.

Make sure to call your medical professional if you observe these as well as other possible signs:

  • Anxiety, shortness of breath, a racing heart, or confusion
  • Queasiness or vomiting that unexpectedly begins after the first trimester
  • Pain in your tummy, shoulder, or low back
  • Abrupt weight gain
  • Swelling, specifically in your face, around your eyes, or in your hands
  • Throbbing headaches that don’t go away


A migraine is more than a dreadful headache. There are a host of other symptoms that you might have with the pain, consisting of blurry vision and level of sensitivity to light. You may feel these signs even before a migraine begins, and they might last up until it’s over.

More remarkable changes to your vision throughout a migraine are called an aura. They can include:

  • Loss of part or all of your vision for a little while
  • Seeing flashes of light
  • Seeing wavy lines or spots

To resolve these problems, you’ll need to deal with your physician to treat your migraines and keep them from the beginning.


You may know this condition from these symptoms:

  • Itchy or aching patches of skin
  • Joint pain and inflammation
  • Thick, red, flaky spots on the skin

But psoriasis can affect your eyes, too. It can trigger a condition called uveitis when inflammation leads to swelling that triggers a blurred vision, pain, inflammation, and sensitivity to light.

Treatments can eliminate uveitis; however, the type you require will depend on which part of your eye is impacted.

Multiple Sclerosis

Sudden blurry vision is often one of the earliest symptoms of multiple sclerosis (MS). The disease causes inflammation along the nerve that links your eyes to your brain, called the optic nerve. That causes a condition called optic neuritis, which can offer you blurry sight, loss of color vision, and pain when you move your eyes. It frequently happens in just one eye.

Besides blurry vision, MS also causes:

  • Difficulty with balance
  • Bladder and bowel problems
  • Dizziness
  • Feeling very tired
  • Numbness
  • Tightness
  • Weak point

Optic neuritis does not necessarily suggest you have MS, so speak with your doctor about what’s causing it. The problem typically disappears by itself, but your medical professional can give you some medications to help you recover faster.

Brain Tumor

Frightening, however real: A tumor in any part of your brain can make pressure develop inside your skull. That can cause numerous symptoms, including blurred vision.

Other signs of a possible brain tumor are:

  • Sleepiness
  • Headache that won’t go away
  • Queasiness
  • Personality changes
  • Seizures
  • Vomiting

If your doctor believes you might have a brain tumor, she’ll use various tests to check how well your brain and spinal cord work, in addition to imaging tests to see inside your head.

Parkinson’s Disease

Blurry vision is not the first sign of this nerve disease. However, as it worsens, it can affect sight. That’s since the condition may change how your eyes move. As your sight seems less sharp, you may strain your eyes since they have to work harder to focus.

Parkinson’s disease affects a lot more than the eyes. It also causes:

  • Poor balance and coordination
  • Tightness in your body
  • Tremors that impact the hands, arms, legs, and face

Last updated on September 10th, 2019

Reyus Mammadli (Eyexan Team Leader) / author of the article
Bachelor in biomedical and electrical apparatus and systems. For more than 20 years he has been studying methods to improve health using affordable and safe methods. Collaborates with eye care charity organization of the CCP. Specialization is a vision correction by laser surgery, including LASIK.
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Ophthalmology: Health of Your Eyes
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