Title: Concussion and Convergence Insufficiency<br/>Author: Brian Corwell<br/><a href='http://umem.org/profiles/faculty/294/'>[Click to email author]</a><hr/><p> Multiple vision disorders may occur after concussion including injury to the systems that control binocular vision including: Convergence insufficiency and Accommodation insufficiency</p> <p> In order to obtain a single binocular vision, simultaneous movement of both eyes in opposite directions is required.</p> <p> To look at an object close by such as when reading, the eyes must rotate towards each other (<strong>convergence</strong>).</p> <p> <strong>Convergence insufficiency</strong> is the reduced ability to converge enough for near vision and is a common visual dysfunction seen after concussion.</p> <p> One of both eyes may also turn outward.</p> <p> May lead to complaints with reading such as diplopia, blurry vision, eyestrain, and skipping words or losing one's place.</p> <p> Patient or parent may also report other difficulties such as becoming more easily fatigued when reading, needing to squint and/or having disinterest in reading.</p> <p> Take home: consider testing convergence in patients with some of these complaints in setting of acute or subacute head trauma.</p> <p> </p> <p> </p> <fieldset><legend>References</legend>
<p> <span style="color: rgb(33, 33, 33); font-family: BlinkMacSystemFont, -apple-system, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif; font-size: 16px;">Master CL, Bacal D, Grady MF, Hertle R, Shah AS, Strominger M, Whitecross S, Bradford GE, Lum F, Donahue SP; AAP SECTION ON OPHTHALMOLOGY; AMERICAN ACADEMY OF OPHTHALMOLOGY; AMERICAN ASSOCIATION FOR PEDIATRIC OPHTHALMOLOGY AND STRABISMUS; and AMERICAN ASSOCIATION OF CERTIFIED ORTHOPTISTS. Vision and Concussion: Symptoms, Signs, Evaluation, and Treatment. Pediatrics. 2022 Aug 1;150(2):e2021056047.</span></p> </fieldset>