Neuro-Optometric Assessment
Visual Neuroscience Primary Visual Cortex Visual Pathways Magnocellular Pathway Visual Agnosia Time Perception

 

A neuro-optometric assessment is best performed by an optometrist who has been residency-trained in neuro-optometry. Dr. Johnson is the only optometrist in Idaho with this advanced training in neuro-optometry.

 

The types of patient that should have a neuro-optometric assessment include those with a history of: traumatic brain injury, concussion, stroke, chronic inflammation within the brain, neuropathy secondary to systemic disease (such as diabetes), tumor or other space occupying lesion within the brain, multiple sclerosis, Parkinson's, and other conditions that can progress to affect the nervous system (such as Lyme Disease).

 

During your neuro-optometric assessment, Dr. Johnson will evaluate every aspect of vision that can be affected by damage to the central nervous system, which include:

 

  • Visual acuity (Clarity of vision): There are several causes of decreased vision following a neurological event (such as acquired brain injury). It is important to determine the cause of the decreased vision as it will allow the doctor to discuss prognosis and potential for improvement.

     

  • Refractive error (Prescription): Sometimes the decrease in vision is due to the need for an updated prescription. When designing a prescription following a neurological event, our doctor will be able to address both the clarity of your vision as well as your binocular vision abilities (binocular vision dysfunction can result in double vision, headaches, eyestrain, and fatigue).

     

  • Visual field loss: The area of the brain that has been affected as well as the extent of the damage will determine the pattern of your visual field loss. Depending on where the damage has occurred, you may experience difficulties to the left, right, both sides, the upper, or the lower portion of your visual field.

     

  • Photophobia (Light sensitivity): Individuals who have experienced acquired brain injury often complain of light sensitivity, even when indoors. Choosing the proper tinted lens is one of the first step towards finding relief.

     

  • Reading difficulties: There are several causes of reading difficulties following an acquired brain injury. Some of these challenges are visual in nature, others visual-perceptual, and others are language based. If your goal is to begin reading again, it is important to address the visual causes of your struggles. Many of the visual causes of reading difficulties following acquired brain injury can be successfully treated with specific glasses or vision therapy.

     

  • Diplopia (Double vision): Double vision can indicate an undiagnosed neurological condition or may result from a known neurological event. In either case, the cause of the double vision needs to be identified. After identifying the cause of the double vision, our doctors will be able to discuss which of the multiple treatment options are best for you.

     

  • Cranial nerve palsies: There are 6 cranial nerves (3 for each eye) that are responsible for controlling the 12 extraocular eye muscles (6 per eye). These nerves and muscles are responsible for controlling where your eyes “look”. Damage to even one nerve or muscle will result in an uncoordinated control of eye position and as a result you may see double.

     

  • Nystagmus (Jerky eye movements): There are multiple causes of nystagmus, some of which are considered normal (or physiologic) while others are the result of underlying neurological pathology. The clinical presentation of nystagmus will allow our doctors to determine the underlying cause and make appropriate recommendations for both minimizing the nystagmus as well as managing your overall health.

     

  • Ptosis (Drooping eyelids): A sudden onset of a drooping lid can be a sign of a more significant underlying condition. Prior to your visit with our doctor it is helpful to gather old photographs to establish a time-line of when the ptosis started.

     

  • Dry eye: Dry eye following a neurological event can result in several symptoms, which include: reduced vision, fluctuating vision, eye irritation, gritty or sandy feeling, burning, or watering eyes.

     

  • Accommodative dysfunction (Eye focusing): Accommodative dysfunction will result in blurry vision, primary when performing tasks at near.

     

  • Convergence palsy (Inability to comfortably use eyes at near): Convergence palsy can result in double vision during near activities, headaches, eyestrain, fatigue, and dizziness. Fortunately, convergence palsy is a condition that can be successfully managed by a doctor with the knowledge of binocular vision and neuro-optometry.

     

  • Eye movement disorders: There are several eye movement disorders associated with acquired brain injury. Literature has shown the reduced ability to track objects as one of the many results of an acquired brain injury. It has also shown the these eye movement disorders response positively to vision therapy.

     

  • Visual perceptual deficits & agnosia: Neurological events not only affect the eyes, but also the connection between the eyes and the brain as well as the areas of the brain responsible for producing and interpreting vision. When these areas of the brain are damaged, it will alter the way in which you perceive your visual world. Fortunately, recent research in the area of neuroplasticity has shown that new connections can be formed within the brain to regain abilities that were once thought to be lost permanently.


Call 208.377.1310 to schedule your neuro-optometric assessment with Advanced Vision Therapy Center.

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.

Blog
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
  Eye tracking, also referred to as visual tracking, is the ability of one's eyes to ?track? from left to right in an efficient manner, and ?follow? the movement of objects. Eye movements should be smooth and consistent, with the ability to be completed quickly.    ... Read More
  As children with undetected vision problems continue year after year, frustration with academic activities can be observed in behavior.  ... Read More
  The human brain measures time continuously, and has developed three general classes of timing systems: circadian, interval, and millisecond timing. Neuroscientists believe that we have distinct neural systems for processing these different types of time. Poor timing or synchronization between the three major brain networks has been implicated in several conditions.   ... Read More
  Well folks, Idaho has officially been taken over by ?Snowpocalypse.? While this record amount of snow poses a lot of challenges (school cancellations, treacherous driving, shoveling, flooding, etc.) it can also be an exciting time for outdoor enthusiasts! Anytime there is precipitation coming down in town winter sports enthusiasts can be spotted with enormous grins. What does that grin mean? Powder day, the best day of the year!   ... Read More
Contact Us

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