Aquired Brain Injury

Acquired brain injury, which includes concussion, traumatic brain injury, stroke and neuro-degenerative conditions, can have several effects on the visual system. These conditions include:

  • Accommodative dysfunction (impaired eye focusing)

  • Binocular vision dysfunction (impaired eye teaming, including convergence palsy)

  • Dry eye syndrome

  • Oculomotor dysfunction (impaired eye movement or tracking)

  • Pupil anomalies

  • Ptosis (sagging or drooping eye lid)

  • Strabismus (eye turn, wandering eye, crossed eye)

  • Visual field loss (peripheral vision or 'side vision' loss)

  • Visual attentional neglect (inability to attend to information on one side of the body)

  • Visual perceptual deficits or visual agnosia – including visual-spatial deficits

  • Prolonged visual processing speed

  • Impaired visual working memory


Post-trauma vision changes are extremely common. In fact, studies have shown that more than 50% of patients experience double vision (although many fail to report or recognize it during the recovery phase). Changes in vision can be difficult for the patient to describe, or they may not be discussed in the acute phase of care. When a patient suffers a traumatic brain injury, stroke, or other neurological event, the priority of their doctor is to stabilize the patient. Vision is often a topic that is left out of the conversation. Also, many vision symptoms do not surface immediately after the incident or may not become problematic until the person enters into rehabilitation or attempts to return to work.


Symptoms due to post-trauma vision conditions include:

  • Asthenopia (eyes feel strained, uncomfortable, or sore)

  • Attention or concentration difficulties

  • Balance difficulties

  • Blurred or fluctuating vision

  • Diplopia (double vision)

  • Dizziness or nausea

  • Fatigues easily (especially with near work, reading, computer)

  • Glare sensitivity

  • Headaches

  • Motion sickness or difficulties with mobility

  • Bumps into objects or walls

  • Difficulties moving through crowded spaces

  • Poor depth perception or 3D vision

  • Abnormal posture (head posture, leans to one side, forward or backwards)

  • Photophobia (light sensitivity)

  • Difficulties with reading fluency or comprehension


It is difficult to list every symptom that a patient may experience due to visual changes following a neurological event. It is important that every patient who suffers a form of acquired brain injury (concussion, traumatic brain injury, stroke, neuro-degenerative condition, etc) receive a Neuro-Optometric Assessment with a Residency-Trained Neuro-Optometrist. The majority of eye doctors (optometrists and ophthalmologists) are not trained in the area of neuro-optometry and do not perform the necessary testing to adequately diagnose post-trauma vision changes. Without a comprehensive Neuro-Optometric Assessment, diagnoses may be missed and the opportunity for treatment and improvement may be lost.

Improvement Starts Here

With over 25 years of proven success, you can trust Advanced Vision Therapy Center to provide the care you need.

Our Clinical Director is Idaho's only residency trained optometrist in vision therapy and neuro-optometry and is a Fellow of the American Academy of Optometry.  His residency at University of California, Berkeley means he has the expertise and experience to treat even the most complex cases.

Read what our patients have to say.

  Vision therapy can be a bit unfamiliar to some people. We are going to begin this blog by discussing briefly when vision therapy is used. Many visual conditions can be effectively treated and managed with prescription glasses or contact lenses. However, for other visual conditions (convergence insufficiency, binocular vision dysfunction, etc) prescription glasses or contact lenses cannot correct the vision problem. It is in these cases that vision therapy may be prescribed.   ... Read More
  Many people are unaware of the differences between an optometrist, a neuro-optometrist, and a behavioral or developmental optometrist. Sure, they sound alike but the services they provide are quite different. And if you, or someone you know, has a vision problem that cannot be corrected with glasses or contact lenses this blog is for you.   ... Read More
  At Advanced Vision Therapy Center our results speak for themselves. Jonah, however, wanted to share his story with you. We invite you to watch this short video to learn more about Jonah's experience and success.   ... Read More
  It's a dangerous world we live in today! With October upon us, people are thinking about spooky, creepy crawly things, and of course things that go bump in the night. Most ghoul hunters know that to protect themselves from the evil lurking in the shadows this time of year, they need the necessities such as garlic, silver bullets, a know, for protection.     ... Read More
  Traumatic Brain Injury (TBI) is a term used within the medical community to describe an injury to the brain which is not hereditary, congenital or degenerative. Traumatic Brain Injury can be result from a blow to the head, whiplash, seizure disorders, tumors, stroke, toxic exposure, or infectious diseases to name a few. The incidence of prevalence of brain injury outnumbers breast cancer, spinal cord injury, multiple sclerosis and HIV/AIDs combined.   ... Read More
  Many people have heard of vision therapy, but don't know a lot about it. As with any type of therapy, the effectiveness of the program is dependent upon several factors. It is advisable to ask questions and do your homework. Vision therapy programs vary greatly from provider to provider.   ... Read More
  Everyday in our schools students are presented with information that they are required to look at, interpret, and process that information. For years it was believed that the eyes had nothing to do with learning. That is definitely not the case. Did you know it is estimated that 80% of what we learn is through visual information?     ... Read More
  Convergence Insufficiency (CI) is a common eye-teaming problem which occurs when the eyes are unable to maintain the ocular posture necessary for reading or near tasks. Convergence Insufficiency results from misalignment of the eyes when focusing on up close, such as when reading. The eyes have a strong tendency to drift outward when reading or doing close up work. The exact cause is unknown.    ... Read More
  After this abnormally tedious Boise winter, we are all ready to get outside and play in the sun! Hold on though, before you rush outside, have you taken the necessary precautions to protect yourself for ultraviolet rays? There are three types of ultraviolet rays, these wavelengths are not visible to the human eye and are shorter than violet wavelengths of light.    ... Read More
  Whether you are playing sports as a hobby or competitively there is a lot to consider. Are you using proper form? Is your equipment up to date? Are you warmed up? Are you wearing the appropriate safety gear? Is your opponent looking bigger and stronger than last time? Seriously, did he grow six inches? Whatever your thought process or preparation is you may be missing a key step. Are you wearing your protective eye-wear?   ... Read More
Contact Us

7960 W. Rifleman Street, #155
Boise , Idaho , 83704 USA
Phone:  208-377-1310
Fax:  208-321-1952