Have you ever felt like you're looking at the world through a paper tube when you're looking straight ahead? Or maybe you're walking down the street and suddenly notice a car approaching from the other side, or you feel like you're squinting when someone comes up to you from the side and talks? This is what we medically call 'tunnel vision' or peripheral vision loss. Don't be scared by the name, let's talk about it simply.
Simply put, what is 'tunnel vision'?
Imagine that our vision has two parts.
1. Central Vision: This is what our eyes focus on when we look straight ahead. Like you're looking at these letters right now. This vision is very clear and sharp.
2. Peripheral Vision: This is what we call 'seeing out of the corner of our eye'. While looking straight ahead, we can barely see things to the sides. This vision is not as clear as central vision, but it is very important for understanding what is happening around us.
Tunnel vision is a condition where your peripheral vision gradually or suddenly disappears. You can only see what is in the middle. It's like looking through a tunnel. That's why it's called tunnel vision. This condition can affect one or both eyes at the same time. Sometimes, you may also experience dizziness or unsteadiness when walking.
The most important thing is to see an eye doctor immediately if you notice any sudden changes in your vision, especially loss of vision in both sides. If you suddenly lose your vision, you should go straight to the hospital's Emergency Department (ETU).
What are the causes of 'tunnel vision'?
There is not one single cause for this condition, but several factors can affect it. These can be diseases related to our eyes, brain, blood vessels, or nerves. Some causes of 'tunnel vision' are temporary, meaning they can be cured with treatment. However, some causes can cause permanent damage to vision.
Let's see what the main reasons are.
| The main causes of 'tunnel vision' | |
|---|---|
| Eye-related conditions | Other diseases of the body |
| Glaucoma: Damage to the optic nerve due to increased pressure inside the eye. This is a leading cause of bilateral vision loss. | Migraine: Some people may experience temporary vision changes before or during a migraine. |
| Retinitis Pigmentosa: This is a genetic disease that affects the retina of the eye. | Stroke: Impaired blood flow to the brain can damage parts of the brain related to vision. |
| Diabetic Retinopathy: Damage to the blood vessels of the eye due to uncontrolled diabetes. | High blood pressure (Hypertension): High blood pressure can also damage the blood vessels of the eye. |
| Retinal Detachment: This is an emergency. The retina of the eye can become detached and cause vision loss. | Concussions: Damage to the brain caused by a blow to the head can affect vision. |
| Optic Neuritis: Inflammation of the nerve that connects the eye to the brain. | Carotid Artery Disease: Narrowing of the main blood vessels in the neck. |
Is there a treatment for this?
Yes, absolutely. But the treatment depends on the underlying cause of the tunnel vision. That's why we recommend seeing a doctor as soon as possible. He or she will examine you, find the cause, and start the right treatment.
You may need to be given medication. For example, eye drops for glaucoma. In some cases, surgery may be necessary. Your eye doctor will explain to you what treatment is needed.
When should you get your eyes checked?
Most eye diseases are easier to treat if they are detected early. Therefore, it is important to have regular eye exams, even if you have no symptoms. The following are the typical eye exam intervals:
| Age group | When to get your eyes checked |
|---|---|
| Young children | The pediatrician should do this around the time your child is learning the alphabet, and then every 1-2 years. |
| Adults under 40 years of age | Once every 5-10 years. |
| Between 40 and 54 years old | Once every 2-4 years. |
| Over 55 years old | Once every 1-3 years. |
Important: If you wear glasses or contact lenses, or if you have a medical condition like diabetes , you may need to have your eyes checked more often. Ask your doctor about this.
Red Flags When You Should See a Doctor Immediately
If you have any of the following symptoms, don't delay. See a doctor as soon as possible. Or go to the hospital's Emergency Department (ETU).
- Sudden loss of vision.
- Severe pain in the eyes.
- New flashes or floaters appearing before the eyes.
Does this also apply to ADHD and Panic Attacks?
- ADHD (Attention-Deficit/Hyperactivity Disorder): Sometimes children with ADHD, when they are doing something they enjoy (like a video game), are focused on it. They don't pay attention to anything else around them. Some people also call this 'tunnel vision'. But it is not a medical symptom. It is more of a metaphor. There is no actual loss of vision in either side.
- Panic Attacks: A panic attack can cause a variety of physical and psychological symptoms. Some people may feel as if their vision is blurred or they can't see clearly. If you are experiencing this, it is important to talk to a doctor or mental health counselor .
Take-Home Message
- 'Tunnel vision' is when you lose your vision on both sides, like looking through a culvert.
- This can be caused by various factors, such as glaucoma, diabetes, and stroke. Therefore, it is very important to find the exact cause.
- If you experience any sudden changes in your vision, especially sudden loss of vision or eye pain, go to the hospital's Emergency Department (ETU) immediately.
- Even if you don't have any symptoms, get your eyes checked regularly , as appropriate for your age. This can help detect many diseases early.
- Don't hesitate to talk to your doctor about any vision-related problems.
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