Post-Concussion Vision Syndrome Testing
Optometric Interventions for Post-Concussion Vision Syndrome Phase 1
In phase one testing optometrists will evaluate whether the post-concussion visual symptoms can be managed in any way with optical interventions.
A precise refraction is the starting point for this evaluation and a determination is made related to any uncorrected or inaccurate previous prescriptions that could be creating any visual symptoms of blur, eye strain or headaches. It is important to note that many patients may experience significant relief from what may otherwise be considered a relatively “light” prescription, especially if the needed correction relates to latent hyperopia, astigmatism, or anisometropia. Optometrists can use trial lenses to recreate the effect of any potential prescription lens and evaluate the immediate response. If relief is perceived by the patient then prescription glasses or contact lenses can be prescribed. Ultimately, accurate prescriptions can yield significant results in reducing some of the post-concussion visual symptoms.
Optometrists can also evaluate the negative effect of certain wavelengths of light on a patient's photophobia, or light sensitivity. For example, some patients will need significant brightness reduction and appropriate tinted lenses can be used to reduce light transmission to the eye. Others may need light amber or contrast enhancing tint for full day use, if there symptoms are present indoor and out. Finally, some patients experience an increase in their symptoms when using digital devices only. In those situations the increase in symptoms can be related to “blue light” emission from the digital device. It is now commonplace in optometry to prescribe specific blue blocking or blue absorbing filters, and they can certainly be applied therapeutically in these cases