by Linda W. Arms
Brain injuries often cause problems with our vision system. I’m not talking about a problem with the eye itself but about the work our brain does to allow us to see and interpret what we see. According to the Neuro-Optometric Rehabilitation Society, around 50% of brain injuries result in problems with our vision system. If you have had a brain injury, you have a good chance of having visual-related problems that in turn result in fatigue; and problems with cognition, balance, and coordination. I’ve had several issues with my vision system with improvement being a work in progress still today after 13 years. I can tell you these have had a major impact on my abilities to do things that I could easily to do before my injury, but I’m happy to say things are so much better today and I don’t notice too many problems on a daily basis like I used to.
You will most certainly have a variety of problems if your vision system is not functioning properly since we use nearly half of our brain for vision-related activities. After a brain injury, our vision system is sometimes overlooked and as a result, we struggle to improve. In my case, the problems with my vision system started being addressed after about 6 months and I was in some type of vision rehab therapy, of and on, for nearly 12 years.
Damage to our vision system cause problems such as:
- Difficulty with eye movements
- Double vision
- Sensitivity to light
- Reduction of visual field
- Problems when shifting gaze from one thing to another
- Difficulty focusing
- Problems reading and comprehending what is read
- Visual mid-line shift
- Sensitivity to visually busy environments
- Problems with walking and balance
- Problems with motor skills
- Dizziness
If you are having problems like these, your brain must work extra hard to get you through your tasks which then causes even more fatigue. A full comprehensive vision exam is frequently not performed on people after a brain injury and these problems are not identified. I know I had to be persistent to get my “eyes fixed”. I went to 3 different specialists who each worked with different parts of my vision problems.
I believe it is very important to visit an optometrist or ophthalmologist who specializes in neurological vision care. After my TBI, I visited two optometrists that did not have this specialty since I thought things were under control although I still had some problems. I didn’t return to either of them because I felt they did not understand the neurological issues. In fact, one doctor became very impatient with me when I told him a number of times I could not do some of the visual tests he was asking me to do – it just didn’t work. After that visit, I’ve made it a point to only see a neuro-optometrist for any type of vision care. You can find a specialist in your area by visiting the following page and scroll down to a box where you can locate a provider:
Neuro-Optometric Rehabilitation Association – Health Care Locator
The following chart, intended for children’s development, shows the components of the visual system and helps me see how they interrelate. Source: http://lynnhellerstein.com/the-developmental-vision-model/
Click on image to view an enlarged image:
The Center for Neuro Skills also provides a good overview of visual problems associated with brain injury:
https://www.neuroskills.com/brain-injury/vision-and-brain-injury/
I was hit in the back of my head by a jet ski (where vision is processsd) 21years ago. What your blog says has been the most lasting and disabling part of my TBI . . . It’s improved but still there!