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Chronic visual dysfunction after blast-induced mild traumatic brain injury

Chronic visual dysfunction after blast-induced mild traumatic brain injury. M. Teresa Magone, MD; Ellen Kwon, OD; Soo Y. Shin, MD. Aim Investigate long-term visual dysfunction in patients after blast-induced mild traumatic brain injury (mbTBI). Relevance

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Chronic visual dysfunction after blast-induced mild traumatic brain injury

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  1. Chronic visual dysfunction after blast-induced mild traumatic brain injury M. Teresa Magone, MD; Ellen Kwon, OD; Soo Y. Shin, MD

  2. Aim • Investigate long-term visual dysfunction in patients after blast-induced mild traumatic brain injury (mbTBI). • Relevance • Over 250,000 servicemembers have been diagnosed with traumatic brain injury since conflicts in Afghanistan and Iraq.

  3. Method • Retrospective case series: • 31 patients with mbTBI (>12 mo prior) without eye injuries.

  4. Results • 22 patients (71%) had loss of consciousness. • 15 were dismounted during blast injury. • 21 patients (68%) had visual complaints: • Photophobia (55%). • Difficulty with reading (32%). • Convergence insufficiency (25%). • Accommodative insufficiency (23%). • Patients with >1 mbTBI had higher rate of visual complaints (87.5%). • Asymptomatic patients had significantly longer time since mbTBI than symptomatic patients.

  5. Conclusion • Long-term visual dysfunction after mbTBI is common even years after injury despite excellent distance visual acuity and is more frequent if >1 mbTBI occurred. • We recommend obtaining careful medical history, evaluation of symptoms, and binocular vision assessment during routine eye examinations in this prepresbyopic patient population.

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