Person håller en bok bakomifrån, med sidorna synliga – symboliserar läsning och visuell fokus.

Double vision (diplopia)
and vergence insufficiency

Double vision, also known as diplopia, is a condition in which a person experiences the sensation of seeing two images instead of one. A situation that can both feel confusing and affect quality of life. Vision problems and double vision are two vision-related issues that are often linked to each other. Imvi Labs, in collaboration with Karolinska Institutet, has developed a method to train eye coordination.

Test your vergence for free
Results in 2 minutes - directly on the screen

Teresa's road back after her stroke

3 years ago Teresa suffered a stroke. After rehab she still struggled with double vision. Teresa didn't give up. Watch the video and see how Imvi helped Teresa back.
Buy 12-week starter package Read more about double vision after stroke

Vergence problems occur when the eyes do not work together effectively. This can be due to a variety of reasons, such as eye muscle imbalances, differences in the refractive errors of the eyes, or neurological problems. When the eyes do not work together properly, it can lead to binocular double vision, also known as diplopia.

Binocular double vision occurs when both eyes are open and can be caused by conditions such as strabismus or eye muscle paralysis.

Strabismus is a common cause of double vision. Covering one eye can help determine whether the double vision is monocular or binocular. If the double vision disappears when one eye is covered, it is likely binocular.

Causes of double vision

Double vision can have several causes, including abducens palsy, which is an eye muscle paralysis resulting in the inability to abduct the affected eye. This can lead to symptoms such as double vision when looking toward the affected side.

Strabismus and double vision are two related conditions that can affect your vision in different ways. Strabismus means that the eyes are not directed in the same direction, which can lead to seeing double. When the eyes are not properly aligned, the brain can receive two different images, resulting in double vision, also known as diplopia. This can be very disturbing and affect your ability to perform daily activities.

Improved vergence helps with double vision

Imvi Labs, in collaboration with researchers from Karolinska Institutet, has developed a method where you train your vergence (eye coordination) by watching movies in VR. The eye coordination training relieves the brain and improves the brain's coordination of eye movements. For those of you who suffer from double vision (diplopia), this can mean that the double image disappears completely.

Entertaining & effective training for you with double vision

play button icon

Stream your favorite series in VR

You can easily train by watching streamed content via the Imvi app on your mobile phone that sits in our VR glasses.

Train while streaming your favorite shows

Through the app you choose what type of content you want to watch. We currently support content from Youtube, SVT Play, Binogi, UR Play and content directly from your phone's camera roll.
Smiley face icon

Train your eye coordination

The app makes the image stream oscillate from right to left. But your brain perceives it as a regular movie.

You watch your series -
Our App does the rest

The training focuses on improving the brain's control of the eyes for better eye coordination. This improves blood flow and oxygenation of the brain, which increases reading speed, reading endurance and concentration.
Statistics icon

Follow your progress

In the app you can easily follow your progress over time and receive recommendations for continued training.

Personalized tips based on your progress

In the app you can follow your or your children's development and results. We offer free accounts for parents to monitor their children's progress! After completing the training, you will receive personal recommendations for further training based on your results and progress.
Take our test Shop our Starter Pack

People with Double Vision & other reading difficulties improve
on average by 101%

Ulrika

"After a concussion last fall, I suffered from fatigue, which made reading even more difficult. But thanks to Imvi, I have more energy and the fatigue has almost completely disappeared."

Theresa, 70 years old

“After a stroke, I had double vision and a reduced field of vision. Now the double vision has disappeared, my field of vision is back, I have improved my memory and have more energy.”

Jill, 37 years old

“I highly recommend trying this. If you have problems after your concussion, check if you have coordination problems and try training with Imvi."

Jonas, 59 years old

“Due to a severe concussion, I had double vision that made it difficult for me to read. Thanks to Imvi Labs, it is now completely gone. It has really improved my quality of life.”
Buy starter pack

What is Diplopia?

Diplopia is a condition where a person sees two images of a single object. This can be a sudden and temporary or a more persistent visual change that affects daily life in many ways. The double image can be horizontal, vertical, or diagonal, depending on the direction in which the double images deviate from each other. It can affect one or both eyes. When it only affects one eye, it is called monocular double vision, and when it affects both eyes, it is called binocular double vision.

Symptoms of diplopia
  • Overlapping images: The experience of seeing two images of an object, either side by side, on top of each other, or a combination of both.
  • Depth perception difficulties: Problems judging distances accurately, which can make it difficult to perform tasks such as driving or pouring liquids.
  • Eyestrain: The eyes can quickly become tired, especially during activities that require focused vision, such as reading or computer work.
 Test for vergence insufficiency

Symptoms of diplopia

Headaches: Recurrent headaches may occur, often as a result of straining the eyes to focus or compensate for double vision.

Squinting: Try to reduce double vision by squinting to improve focus.

Sensitivity to light: Increased sensitivity to light or discomfort in bright environments.

 Buy Imvis Starter Pack

Sudden double vision

Those who experience sudden double vision naturally wonder what causes it. This varies from case to case. A common cause of sudden diplopia is brain trauma, such as a concussion or double vision stroke.

 Read more about sudden double vision

What causes double vision?

The causes of double vision can vary depending on the individual and life situation. Here are some of the most common reasons:

  • Concussions and head trauma: Injuries to the brain can affect the nerves and muscles that control the eyes, resulting in double vision.
  • Neurological diseases: Conditions such as multiple sclerosis (MS), stroke or brain tumors can disrupt the coordination of the eyes.
  • Muscle weakness: Diseases like myasthenia gravis can affect the muscles around the eyes.
  • Strabismus: An imbalance in the direction of the eyes can cause them not to focus on the same point.
  • Refractive errors: Large differences in refractive errors between the eyes can create the experience of double images.
  • Diabetes: Damage to the nerves controlling eye movements can be caused by diabetic complications.

The difference between monocular and binocular double vision

It is important to distinguish between monocular and binocular double vision to identify the root cause:

  • Monocular double vision occurs when one eye sees two images. This is often caused by problems in the structure of the eye, such as cloudiness of the lens (cataracts).
  • Binocular double vision occurs when both eyes do not work together properly. Here, neurological or muscular causes are more common.

How can double vision be addressed?

There are several treatments that can relieve or completely eliminate double vision depending on the cause. Some of the most effective methods include:

1. Vision training with VR and other technologies

VR-based vision training, like the method developed by Imvi Labs, focuses on training the coordination of the eyes and relieving the brain's coordination. The technology is easy to use and can be done from home.

2. Prism glasses

Prism glasses can be used to adjust the direction of light when it hits the eye. This helps the eyes focus on the same point and eliminates double vision.

3. Surgery for strabismus

If double vision is caused by strabismus, surgery on the eye muscles can be an effective solution to restore the direction of the eyes.

4. Botulinum toxin (Botox)

In some cases, injections of botulinum toxin can help improve muscle function around the eyes and reduce the imbalance that causes double vision.

 Buy Imvis Starter Pack

The Importance of Early Diagnosis

Seeking help at the earliest signs of double vision is crucial to prevent the condition from getting worse. Diplopia can be a sign of underlying health problems that need prompt investigation, such as neurological diseases, diabetes, or injuries after trauma. If diagnosis and treatment are delayed, double vision can affect daily activities such as driving, working at a computer, or reading. Early intervention offers a better chance of complete vision recovery and improved quality of life.

Did you also know that there is a treatment for vision problems ?

FAQ

How do you know if you have vergence insufficiency?

To know if you have a vergence insufficiency, you can look for signs such as eye strain, headaches, and difficulty judging distances. If your eyes are not working together effectively, it can be an indication of a vision problem. We also offer a free test that you can take here.
What are common symptoms of vergence problems?

Common symptoms include headaches , eye strain, blurred vision, double vision , and difficulty focusing on text. It is important to pay attention to these signs and seek medical attention in a timely manner.
Can you train vergence insufficiency?

Yes, vergence insufficiency can be trained through various methods, including eye coordination training that focuses on improving eye-hand coordination. Traditional exercises, such as moving a pencil back and forth, are examples of this training. Imvi Labs has developed a method that trains eye coordination problems by watching movies in VR.
How does the training go?

You train your eyes to coordinate by watching videos with the Imvi app in our VR glasses. Through our patented technology, the film swings sideways and makes the eyes follow the same movement, while the brain perceives a regular film.

You choose what you want to watch from, for example, YouTube and SVT Play.