Vestibular First on Instagram: "📚�The story: 15 years old post-concussion, recovering well, but headaches are her last complaint, and especially with reading. 👁️ Normal findings on oculomotor annd vestibular exam in room light, but we see this eye movement with her in fixation blocked (infrared video goggles). 🦋 Defined as voluntary flutter or “voluntary nystagmus,” this eye movement is often associated convergence spasm. It can be related to stress or trauma (the patient may or may not be aw