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Preliminary study for Neurovisual Assessment Model using Eye Tracking (NAMET) related to cognitive functions for TBI patients


Abstract

Introduction: Traumatic brain injury can cause visual dysfunction (if not treated with visual therapy) and it can hinder a patient’s rehabilitative progress. Screening for a Visual processing assessment to identify visual symptoms in TBI patients at the HCFMUSP Neurology Clinic. Previous literature presents common visual symptoms that were identified in these patients, such as: • visual field loss, • double vision, • posture and balance difficulties, • blurred vision, • attention and concentration problems • difficulties in near visual tasks, • headaches, • reading difficulties, • reading problems. • motor coordination problems, • difficulties locating objects accurately. • accommodative dysfunction • convergence insufficiency Traumatic brain injury can cause visual dysfunction unless resolved, can hinder a patient’s rehabilitative progress. This study presents a Neuro Visual assessment model for visual and cognitive rehabilitation following TBI and it can include Visual Acuity (VA) Visual Field, eye movements (Eye Tracking), Accommodation and Convergence. Results: In the preliminary study, similarity was found between existing literature and visual dysfunctions from patients following TBI. Conclusion: The assessment protocol following TBI can identify changes in saccadic eye movements, segments and their impacts on cognitive functions, sensory, motor and emotional systems. The treatment to improve visual dysfunctions can improve Reading problems; oculomotor, balance and binocular disorders using prisms, lenses and filters for also attention and concentration difficulties. Literature shows cases of improvement post-TBI visual symptoms using nonfunctional lenses, prisms, filters, binasal occlusions. Previous literature can found cases of improvement of depressive symptoms, aggressive behavior, self-confidence, self-esteem, posture and balance

Keywords

visual disorders, visual impairment, severe TBI, neuro-optometry

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