Recently there have been two published articles which show the relationship between concussion and vision deficits. These articles both highlight the prevalence of vision problems after concussion and suggest recommendations for incorporating vision evaluation for the concussion protocol:
In this paper, records of 25 patients with a medical diagnosis of concussion were reviewed. Three primary categories of vision/reading deficits were found: convergence insufficiency (eye-teaming problem-56%), accommodative insufficiency (focusing problem-76%), and oculomotor-based reading dysfunctions (68-82%). The most common symptom was headaches (84%).
68% were categorized as reading at least 2 grade levels below their current school grade level for reading eye movements based on the objective eye movement recordings. The reduced reading speed and efficiency is important as it is the first report using objective eye movement recordings to document oculomotor reading deficits in this patient group. This gives further credence to the importance of vision and eye movement evaluation in the return to learn protocol.
2. Vision Diagnoses Are Common After Concussion In Adolescents (Masters et al.)
100 adolescents who were diagnosed with concussion underwent a comprehensive vision examination. Overall, 69% had one or more of the following vision diagnoses: accommodative disorders (51%), convergence insufficiency (49%), and saccadic dysfunction (eye movement deficits-29%). In all, 46% of patients had more than one vision diagnosis. These data indicate that a comprehensive visual examination may be helpful in the evaluation of a subset of adolescents with concussion. Academic accommodations for students with concussion returning to the classroom setting should account for these vision diagnoses.