![]() Smooth pursuit eye tracking tests should be assessed in both horizontal and vertical directions, because these different types of movements have different pathways. Smooth pursuit eye tracking serves as part of the diagnostic testing used to assess the patient’s ability to accurately track a visual target in a smooth, controlled manner. How Do you Test Smooth Pursuit Eye Movements? ![]() It can lead to difficulties in maintaining focus, tracking objects in motion, and judging distances accurately. These various alterations in smooth pursuit eye tracking can disrupt visual processing and affect daily activities following a head injury. It is not uncommon for traumatic brain injuries to result in asymmetrical eye movement, where one eye may lag or deviate more than the other during eye tracking. This delay can make it challenging to keep up with rapidly moving objects or to anticipate their trajectory accurately. Increased latencyįollowing a brain injury, there may be a delay or latency of smooth pursuit eye movements. They may struggle to track objects that move at different speeds or across larger visual fields. Reduced eye tracking rangeĬoncussion patients may experience a diminished range of smooth pursuit eye movements. The precision and accuracy of smooth pursuit eye movements may be compromised, leading to difficulties in smoothly following a moving target. Head trauma can disrupt the ability to smoothly track moving objects. Smooth pursuit eye tracking can be affected in several ways following a concussion: In addition to difficulty with these types of activities, patients complain of dizziness, headaches or nausea while attempting to perform them. As a result, concussion patients often struggle with tracking even slowly-moving objects accurately. This is due to the damage that occurs in the pathways of the brain responsible for controlling these movements. Research has shown that traumatic brain injuries can affect smooth pursuit eye tracking. How does a Concussion Affect Smooth Pursuit Eye Movements? “visual motion sensitivity” (dizziness when driving, supermarket syndrome (crowded environments)).difficulty reading and losing their place on page.See below for common visual symptoms following a concussion.Ĭommon Visual Symptoms Following a Concussion: Occasionally, patients report visual symptoms that are specific to the eyes (blurred vision, light sensitivity, eye fatigue, double vision, impaired peripheral vision etc.), however, often the concussion symptoms are vague, such as headaches and dizziness. Unless an individual is assessed properly following an acute concussion, these visual problems generally get missed, since most individuals are not aware that their symptoms may be coming from their eyes and visual integration system. Concussion related vision problems can involve impairments to eye movements, eye reflexes, eye tracking, focusing, visual acuity and pupil function. The prevalence of vision problems following a traumatic brain injury, like a concussion, is roughly 50%. Prevalence Of Visual Symptoms Following a Concussion As such, following a concussion, specific visual areas of the brain, as well as integrative pathways, can be affected, resulting in visual dysfunction. The visual system is largely interconnected with most areas of the brain (roughly 60%). How Does a Concussion Affect The Visual System?Ī concussion is a type of traumatic brain injury that can disrupt normal brain function. Smooth pursuit eye tracking can occur in any direction of gaze including horizontal, circular, and vertical. Specialized cells, located in specific regions of the cerebral cortex and brainstem, coordinate the precise movement of our eyes in response to the velocity and trajectory of the moving target. The fovea is a part of the retina responsible for vision and processing incoming visual information. The underlying physiological process of smooth pursuit eye tracking involves a complex interplay between various neural pathways from the brain and eye muscles that work together to help maintain focus on a moving target and stabilize the object on the fovea. The Physiological Process of Smooth Pursuit Eye Movements They play a vital role in activities such as sports, driving, and even reading, where the ability to smoothly track a moving target is crucial for accurate and efficient visual processing. Smooth pursuit eye movements not only enable us to visually track objects but also contribute to our overall perception of motion, depth, and spatial relationships. Why are Smooth Pursuit Eye Movements Important
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