Eye Tracking
Measure eye movement and visual stability effectively.
Oculometrics in Traumatic Brain Injury (TBI) Assessment
Oculometrics involves the precise measurement of eye movements to evaluate underlying neural function. Since a TBI can disrupt the complex brain networks responsible for controlling eye motion, these assessments serve as sensitive indicators of neurological damage. Evaluation is conducted using both straightforward clinical bedside tests (such as observing rapid eye shifts, or saccades, and smooth target tracking) and highly advanced, quantitative measures utilizing specialized eye-tracking technology. These objective tests are instrumental in diagnosing TBI, characterizing sensorimotor deficits, and effectively monitoring recovery progression.
Standard Oculomotor Assessments
Clinical tests offer rapid, often sideline-applicable, insights into oculomotor function:
Saccade Testing (Rapid Eye Shifts)
Purpose: Assesses the brain's ability to quickly and accurately direct the gaze from one stationary point to another.
Clinical Method: The examiner holds two fingers apart, instructing the patient to rapidly alternate their gaze between the targets.
Abnormal Finding: Saccade dysmetria, characterized by the eyes consistently undershooting or overshooting the target, requiring corrective, small movements to finally locate the point.
Smooth Pursuit Testing (Visual Tracking)
Purpose: Measures the capacity to smoothly and continuously follow a moving object with the eyes.
Clinical Method: The patient visually tracks a finger or target moving slowly in a predictable path without moving their head.
Abnormal Finding: The inability to maintain smooth pursuit, often resulting in jerky, saccadic substitutions instead of fluid tracking.
King–Devick (K-D) Test
Description: A formalized, standardized test suitable for sideline application that involves rapidly reading a series of numbers arranged in specific patterns to gauge reading speed and eye movement efficiency.
Advanced Quantitative Tracking
Sophisticated technology provides superior precision and depth of data:
Ocular Motor Tracking (Eye-Tracking Technology)
Method: Advanced systems provide highly precise, quantitative measurements of various eye movements.
Capabilities: These systems can measure complex tasks, such as anti-saccades (the ability to suppress the natural impulse to look at a target and instead look in the opposite direction).
Clinical Utility of Oculometrics
Eye movement analysis offers valuable objective data throughout the TBI continuum:
Diagnosis of TBI:
Eye movement abnormalities serve as a highly sensitive biomarker for brain injury, sometimes revealing subtle neural deficits that are undetectable through standard neuroimaging or simple naked-eye observation.
Quantification of Deficits:
The tests yield objective, quantitative data regarding eye movement function, which is critical for characterizing the specific sensorimotor and visual impairments caused by the TBI.
Monitoring Rehabilitation:
By longitudinally tracking changes in oculomotor function over a period of time, clinicians gain a reliable metric to monitor the patient's recovery trajectory and objectively evaluate the effectiveness of therapeutic interventions.
Our Advanced Testing
Through advanced occulometric testing protocols, we provide precise diagnostic capabilities that reveal the subtle yet significant neural changes following traumatic brain injury. Book your assessment.