Prism lenses are commonly prescribed by neuro optometrists to correct an imbalance in the eyes and change the perception of space for a patient with post trauma vision syndrome. In this blog, we will discuss the use of prisms for post-traumatic vision syndrome (PTVS) and how they can help those who have suffered from a traumatic brain injury.

What are prisms?

Prism lenses are used to shift light in the eyes, which can help to correct an imbalance in the eyes. They are commonly used during treatment for post-traumatic vision syndrome. The most common approach is using small amounts of base-in prism. Oftentimes, this can be in the order of about a quarter to as much as one or more prism diopters of base-in.

What is a yoked prism? Does it improve balance?

A yoked prism is a type of optical prism that is used to correct for double vision, which is a condition where the eyes are misaligned and the brain receives double vision. The prism redirects light entering the eye, allowing the brain to correctly perceive a single image.

Yoked prisms can help improve balance in some cases, as it can help correct for binocular vision disorders that can affect balance. Strabismus, for example, can lead to a lack of depth perception which can make it difficult to judge distances and maintain balance. By using a yoked prism to correct for misaligned eyes, it can help to improve depth perception and therefore improve balance. In addition, yoked prisms can be used as part of a vision therapy program to improve binocular vision, which in turn can improve balance and coordination.

However, it is important to note that balance is a complex issue that can be caused by a variety of factors such as inner ear problems, muscle weakness, or neurological conditions. Therefore, yoked prisms may not be suitable for all cases, and other forms of treatment may be needed to address balance issues.

What is post trauma vision syndrome (PTVS)?

Post trauma vision syndrome (PTVS) is a condition that can occur immediately after a traumatic brain injury, but it can also persist for years post-injury. In some cases, patients have been three to four years out from an injury and still present with persistent symptoms. The condition can be addressed quickly in an inpatient setting, and patients are usually grateful to find out that there are things that can still be done about it.

The goal of treatment for PTVS is to refer patients to specialists who specialize in the use of specialized prisms, specialized optics, and various other treatments. The Neuro-Optometric Rehabilitation Association (NORA), Optometric Extension Program Foundation (OEPF), and the College of Optometry and Vision Development (COVD) are organizations that work to educate optometrists on the use of prisms for PTVS.

Who is at risk for post traumatic vision syndrome?

Post traumatic vision syndrome can occur at any age, from young children who have suffered a fall to seniors who have suffered a stroke. It is important to note that anyone who has suffered a brain injury can benefit from the help that is provided by our neuro-optometrists who specialize in treating post trauma vision syndrome.

If you don’t already have a trusted optometrist, you might begin your search online by entering “neuro optometrist near me”.

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