Understanding photophobia in mTBI patients

Photophobia or photosensitivity, is one of the more common conditions associated with a traumatic brain injury, experienced by approximately 50% of patients.

Call Us

111-222-3333

Understanding photophobia in mTBI patients in PRIMARYCITY

Find out if you need to see an optometrist by taking the Double Vision Quiz

One of the most common symptoms reported after a head injury is photophobia or light sensitivity. This is experienced both by those who have had a serious head injury (TBI or traumatic brain injury) as well as a mild head injury (mTBI).

Mild TBI (mTBI), which is typically defined by Glasgow Coma Scale score ≥ 13, accounts for the vast majority of all TBIs, particularly in the setting of sports-related injuries. The Glasgow Coma Score is a method for assessing the patient's extent of consciousness after a traumatic brain injury.

At our specialty eye care center we provide advanced care for patients who experience light sensitivity following a stroke, concussion or neurological condition. We are proud to provide cutting edge neuro optometric rehabilitation services to patients from all over STATE, and we are proud to be a leading provider of neuro-optometric rehabilitation services for patients from CITY, SECONDARY1, SECONDARY2, and SECONDARY3.

What are the most common symptoms and conditions you may experience following a mTBI?

A mTBI can result in a variety of visual complications. These are some of the most common visual-related conditions and symptoms:

Oculomotor dysfunction
Convergence insufficiency
Accommodative dysfunction
Dry eye
Photophobia
Visuo-spatial disorientation
Dizziness
Headache
Sleep disorders
Photophobia, or photosensitivity, is one of the more common conditions associated with TBI, experienced by approximately 50% of patients.
The reduced peripheral field (also known as collapsed fields) is another common mTBI symptom.

The conditions described above are in some way related to one another. There is a link between convergence problems and accommodative problems, for example. Another example is headaches and photophobia. Post Traumatic Vision Syndrome was described by William V. Padula, OD, as a cluster of vision and spatial disorders that affect people who have suffered a neurological event, such as a traumatic brain injury, a cerebral vascular accident, multiple sclerosis, or another neurological disorder.

If you are experiencing any of the above symptoms and conditions following a traumatic brain injury, you don't have to suffer any longer. It is possible to alleviate these symptoms with a customized neuro-optometric rehabilitation plan and continue to do your everyday tasks without difficulty and sensitivity to light. To schedule a neuro-optometric evaluation, please call 111-222-3333.

How does a TBI affect your visual ability?

Often, when the visual system isn't functioning appropriately after a neurological/traumatic injury, we see a high level of exophoria (one eye drifting out) or exotropia (eye misalignment where one eye deviates outwards). Due to this additional effort, the visual system is stressed and activates the proprioceptive fibers in the extraocular muscles, which transmit signals to the trigeminal ganglion indicating the added effort. Nerve signals sent to the trigeminal ganglion activates pain signals through the thalamus and up to the cerebral cortex. Patients may experience headaches, light sensitivity, or dizziness.

What is the connection between light sensitivity and traumatic brain injuries?

Photophobia is closely linked to pain sensation. It is the trigeminal nerve and its nuclei that are responsible for sensations of pain in the head. Several parts of the eye are densely innervated with trigeminal fibers and sensitive to pain, including the conjunctiva, cornea, sclera, and uvea (iris, ciliary body, and choroid). Photophobia is usually caused by painful stimuli to these areas (e.g. corneal abrasion, iritis, uveitis).

What is the mechanism that triggers light sensitivity in TBI?

On a pathophysiological level, let's examine some of the more common mechanisms. The retina contains photosensitive cells known as rods, cones, and intrinsic photosensitive retinal ganglion cells (ipRGCs). In the human retina, rods and cones are the predominant photosensitive cells. Melanopsin is found in the intrinsic photosensitive retinal ganglion cells. These cells specifically detect luminance levels, but they do not support vision. The ipRGC sends axons to the suprachiasmatic nucleus of the hypothalamus, and these axons control circadian rhythms. In addition, the ipRGC cells also send axons to the Edinger-Westphal nucleus to control the pupil light reflex. In the human retina, there are only 3,000 of these cells, representing .2% of all RGCs. These cells are photoreceptive, with maximum sensitivity to blue light within the 460-480 nm range. A patient with a traumatic brain injury may have a poorly regulated melanopsin-signaling system when exposed to light.

Does visual field loss occur in patients with light sensitivity?

In patients with photosensitivity, visual fields are important. It was noted by Christine T. Langerhorst and Avinoam B. Safran that there were generalized constrictions in the visual field. While the authors attributed it to an attention disorder, Jackowski attributed it to loss of rod-mediated activity related to dark adaptation. All patients reporting photosensitivity had visual field losses within the central 30 degrees when Jackowski used frequency doubling technology (FDT). Rods affect magnocellular loss, which affects the FDT. These patients reported collapsing visual fields during testing. Kinetic fields, such as Octopus or Goldmann, can also be used to map the visual field constriction. It was found that the FDT and kinetic fields show a strong correlation with visual field constriction.

How is light sensitivity treated and managed in patients with mTBI?

The degree of light sensitivity caused by mTBI varies from mild to severe. The most severe cases might require patients to wear sunglasses constantly, even indoors. They may be sensitive to fluorescent lighting as well as digital devices, which emit a lot of blue light. With the introduction of filters and vision rehabilitation, light sensitivity can be improved even when it is severe and of long duration.

The goal is to relieve symptoms with specific filters and to take the patient off the use of sunglasses indoors. Photosensitivity is associated with visual fatigue. It often occurs in conjunction with binocular vision problems, and is not a standalone condition. Binasal occlusion is used to reduce binocular stress in patients with mTBI. Through binasals, the system becomes less hyper-focused, which reduces sensitivity to light. Additionally, blue filters may reduce symptoms of indoor light sensitivity. Polaroid, blue-blocking filters, and FL-41 filters can be used outdoors to tone down the brightness.

Photophobia is a complex subject. Research in the future will provide us with a deeper understanding of photophobia in mTBI patients and allow us to provide better treatment for them.

Common Questions

Is photophobia or light sensitivity permanent?

In some cases, photophobia may be temporary and resolve on its own or with treatment. In other cases, it may be a long-term or permanent condition. Since there are a variety of causes for light sensitivity it is very important to schedule a neuro optometric evaluation to fully understand what is causing your symptoms.

Are there any home remedies for photophobia or photosensitivity?

Some people find relief from photophobia with home remedies such as using artificial tears, wearing sunglasses or a hat to block out bright light, or taking breaks from screens and other sources of artificial light. However in most cases these home remedies are not adequate to solve the issue. When you schedule a neuro optometric evaluation we spend time assessing the root cause of your light sensitivity as well as discussing the various treatment options such as binasal glasses and specialized filters. It is important to note that home remedies are generally not effective for everyone and are not a substitute for proper medical treatment by an eye doctor.

When should I see an eye doctor for light sensitivity or photophobia?

If you are experiencing photophobia and it is severe, persistent, or causing discomfort, it is important to see a neuro optometrist. You should also see a neuro optometrist if you are experiencing other symptoms that may be related to an underlying condition, such as eye pain or changes in vision. In many cases light sensitivity can be remedied by using filtered lenses or binasal glasses, these is a fairly simple solution and does not require a major investment, we highly recommend scheduling a neuro optometric evaluation to treat your light sensitivity.

Understanding photophobia in mTBI patients

Schedule a neuro optometric evaluation near you

If you or a loved one has suffered a traumatic brain injury and has been suffering from light sensitivity or any of the above listed visual conditions, please schedule a neuro-optometric evaluation with .

DOC BIO GOES HERE

To schedule a neuro optometric evaluation, please call 111-222-3333. Those who have suffered a traumatic brain injury and have been suffering from visual conditions visit our clinic from all over STATE, and we are proud to be a leading provider of neuro-optometric rehabilitation services for patients from CITY, SECONDARY1, SECONDARY2, and SECONDARY3.

Learn More

Understanding the Impact of Multiple Sclerosis on Vision

MS is a chronic autoimmune disease that impacts the CNS, including the brain, leading to vision issues.

Uncontrolled eye movements: how nystagmus can affect your vision and how a neuro-optometrist can help

At our optometry clinic, we specialize in the diagnosis and management of Nystagmus, a condition that causes involuntary eye movements.

Vision Problems from Lyme Disease: How lyme disease can affect your vision and what a neuro-optometrist can do to help.

Lyme disease can cause a wide range of visual symptoms such as double vision and loss of vision, neuro-optometric rehabilitation can help to improve vision.

1 2 3 … 9 Next »

Testimonials

22222

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

Ilan 2

1111111

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

Ilan

Blog

Vision Therapy for Concussion Recovery: Enhance Healing and Visual Function

May 2, 2023

It is estimated that up to 90% of patients who experience a concussion may encounter some form of vision-related symptoms or problems. Concussions are a common type of brain injury that can cause a range of symptoms, including headaches, dizziness, and blurred vision. While rest and avoiding physical activity are often recommended for concussion recovery, […]

Cute Boy Covered His Eye With Hand Standing Optics Clinic 1

Maintaining Optimal Eye Health: Signs You May Need New Glasses

April 29, 2023

Good eyesight is essential for our daily lives, whether it's for driving, reading, or simply enjoying the scenery around us. If you wear glasses, ensuring your prescription is up-to-date is crucial, as failing to do so can lead to headaches, eyestrain, and other vision-related problems. In this blog post, we'll discuss the signs indicating you […]

Colored Contact Lenses: Safety, Risks, and Proper Care for Your Vision

April 24, 2023

Colored contact lenses have gained popularity in recent years as a way to change or enhance one's eye color. While they can be a fun way to experiment with different looks, some people may have concerns about the potential risks to their vision. In this blog, we will explore whether colored contact lenses can harm […]

see all blogs