What Does It Mean If My Peripheral Vision Has Changed?

Baptist Eye Surgeons • April 5, 2023
There is a light at the end of the tunnel.

* This blog post was last updated on 04/05/23

Sudden changes to your vision can be alarming. For example, a reduction in peripheral vision makes it hard to see anything besides what’s directly in front of you. When this occurs, you need to know what it may mean and what you should do about it.

Peripheral vision is the ability to see around you without moving your head. Changes can occur for different reasons, including problems with the retina. Eye conditions such as glaucoma and diabetic retinopathy can cause reduced side vision as well. Your ophthalmologist can diagnose the cause and provide treatment if necessary.

What is Peripheral Vision?

Peripheral vision, or side vision, lets you see what’s above, below, and to the side without having to move your head. Peripheral vision loss (PVL) occurs when your side vision becomes diminished. Also known as tunnel vision , it can cause you to feel as if the world is closing in around you. 

In the back of the eye is a thin layer of tissue known as the retina . When healthy, cells in the retina sense incoming light and create our peripheral and central vision (when you stare straight ahead). The retina sends signals to the optic nerve, which sends signals to the brain where it becomes what we see.

You can develop PVL at any age, but it’s more common as you age. This is due to underlying eye conditions that develop as you grow older. Damage to the optic nerve, retina, or part of the brain that processes visual input can also result in PVL.

PVL can cause problems with spatial orientation and mobility. Those with the condition are more likely to trip over objects in their path or bump into other people. For many, it also leads to impaired night vision.

Tunnel vision is permanent in most cases, but there are instances where it’s only temporary. For example, people suffering from migraine headaches sometimes suffer from temporary tunnel vision. The condition can affect both your eyes or only one of them.

Causes of PVL

The American Academy of Ophthalmology notes that peripheral vision loss is often caused by four conditions:

Glaucoma

Glaucoma causes PVL by damaging the optic nerve, which connects the eyeball to the brain.Tunnel vision can occur as the condition progresses, damaging the optic nerve further. If left untreated, glaucoma can eventually result in complete vision loss.

Glaucoma is the second-leading cause of blindness worldwide. It is often referred to as the “silent thief of sight” due to not having any symptoms before vision loss. It’s usually too late to prevent or reverse PVL once it has set in. This makes comprehensive eye exams all the more important.

Click here to download our free ebook, The Complete Guide to Glaucoma !

Diabetic Retinopathy

One of the ways the retina can become damaged is by high blood sugar levels. They can damage the small blood vessels in the retina along with the rods and cones that sense light. As damage progresses, changes to vision, including peripheral vision loss, become more evident.

About 40-45% percent of Americans with diabetes have a form of diabetic retinopathy. However, about 50% of them don’t yet know that they have the disease. This is because symptoms haven’t appeared yet or because they’ve skipped regular eye exams to screen for the disease.

To read our diabetic retinopathy FAQ with Dr. Erik Sweet, click here !

Retinitis Pigmentosa

Retinitis pigmentosa is a genetic condition that damages the retina and can affect people at any age. Night blindness is usually the first noticeable symptom, but it may progress to being unable to distinguish colors. Eventually, it can develop into PVL. Vision loss from retinitis pigmentosa varies from person to person depending on the type and progression rate of the disease.

Droopy Eyelids

PVL can also be caused by droopy or heavy eyelids covering part of the eye that wouldn’t normally be covered. This reduces your field of vision as the eye is exposed to less light.

Patients often experience greatly improved peripheral vision after upper eyelid surgery , which allows more light to enter the eye. Many patients comment that they didn’t realize how much their vision was affected before surgery compared to after.

Click here to download our comprehensive guide to cosmetic eyelid surgery in Knoxville, Tennessee!

Treatments For PVLCaucasian man in a white button-down shit cupping his eyes to simulate sudden peripheral vision loss

See your eye doctor immediately if you ever experience a sudden increase in tunnel vision . This may indicate a detached retina which must be treated as soon as possible to avoid permanent vision loss.

There are currently no easy fixes to correct permanent loss of peripheral vision. However, special eyewear or optical devices can sometimes be added to your glasses prescription to expand your field of view.

The best remedy for tunnel vision due to glaucoma is prevention. You must take your glaucoma medication regularly to control high eye pressure. Otherwise, you risk permanent optic nerve damage and the development of blind spots in your visual field.

Treatment is similar if you have diabetic retinopathy. Controlling your blood sugar levels and maintaining a healthy weight and lifestyle can slow or prevent vision loss. Some people benefit from techniques taught by sports vision specialists that may strengthen peripheral parts of the field of vision.

Consider visiting a low-vision specialist if you have permanent loss of side vision. They can provide eye care that may help with mobility problems caused by tunnel vision.

If you or a family member have diabetes, glaucoma, or other eye conditions then you may have a higher risk of PVL. Don’t wait for signs of PVL to schedule a comprehensive eye exam. 

Do you need a comprehensive eye exam due to sudden changes in your vision? Contact us today to schedule your appointment!

Your peripheral vision allows you to see around you without having to move your head. You can lose this ability for a number of reasons including issues with the retina or optic nerve. There are multiple conditions that can cause the condition, such as glaucoma and diabetic retinopathy. Your Knoxville or Morristown ophthalmologist can diagnose the cause and provide much-needed treatment.

Baptist Eye Surgeons is an ophthalmological practice in Knoxville, TN, and Morristown, TN. Give us a call at 865-579-3920 for more information or to schedule an appointment .

August 28, 2026
Healthy vision is essential for a child's development, learning, and daily activities. From recognizing faces in infancy to reading, participating in sports, and navigating school, children depend on their eyesight to interpret and relate to their environment. Knowing typical vision milestones helps parents spot possible issues and seek appropriate care when needed. How Does Vision Develop in Children? Vision develops rapidly during the first years of life. Newborns perceive light, shapes, and nearby objects, although their vision remains immature. As children mature, their capacity to focus, track moving objects, recognize details, and coordinate both eyes improves progressively. Due to the gradual nature of visual development, regular eye examinations are essential. Certain childhood vision problems may not be readily apparent, especially when one eye is stronger than the other. Although each child develops at an individual pace, several general vision milestones may guide parental observation. 1. Infants: Birth to 12 Months Within the first year, infants typically develop the ability to focus on faces and objects, visually track moving items, and reach for objects they observe. Caregivers may also observe infants responding to known faces and visually exploring their environment. If an infant does not track objects, exhibits eyes that frequently cross or wander, or fails to respond visually to people or objects, these concerns should be discussed with a pediatrician or eye care professional. 2. Toddlers: Ages 1 to 3 As children become more active, their visual skills continue to develop. Toddlers rely on vision to walk, climb, manipulate small objects, and interact with toys. Over time, they typically improve in identifying familiar people and objects and in coordinating eye and hand movements. Frequent eye rubbing, squinting, sitting close to screens, or difficulty seeing objects could indicate the need for an eye exam. 3. Preschool and School-Age Children By preschool and early elementary school, children utilize vision for detailed activities including coloring, drawing, letter recognition, reading, and participating in games. Effective eye coordination and focusing abilities support learning and classroom performance. Children may not always realize their vision differs from other children’s, so parents should watch for signs such as headaches, avoiding reading, losing their place while reading, holding books unusually close, or struggling to see the board. Signs of Possible Vision Problems Caregivers should monitor for changes in a child's vision or behavior. Potential warning signs include: Frequent squinting or eye rubbing Eyes that cross, wander, or do not move together Complaints of blurry or double vision Frequent headaches Difficulty reading or concentrating Sitting very close to a television or screen Tilting or turning the head to see Covering or closing one eye Difficulty recognizing objects or seeing at a distance Avoiding activities that require close or distance vision If you notice these signs, speak with a pediatrician or eye care professional. The Importance of Children’s Eye Exams Regular eye examinations can identify vision problems before they interfere with learning and development. Eye care professionals assess visual acuity, binocular coordination, and common childhood eye conditions. Early detection matters because some vision problems are easier to address when identified in childhood. Parents must follow their child’s healthcare provider's recommendations for vision screenings and comprehensive eye exams. Helping Protect Your Child’s Vision Caregivers can promote healthy vision by encouraging beneficial habits. These include spending time outdoors, taking regular screen breaks, using appropriate protective eyewear during activities, maintaining a balanced diet, and attending recommended pediatric and eye care appointments. Supporting Healthy Vision at Every Age Knowing children's vision milestones helps caregivers distinguish typical development and spot possible issues early. Throughout infancy and the school years, monitoring how a child sees, focuses, and interacts with their environment is vital for supporting healthy development.  If you notice concerns about a child's eyesight or alterations in vision, consult a healthcare provider or eye care professional. Early attention to vision supports learning, development, confidence, and overall quality of life.
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