Alterations of stabilization of the eyes under dynamic conditions

Dynamic stabilization of the eyes depends mainly on vestibulo-ocular reflex (VOR). VOR is initiated by the labyrinth of the inner ear and is modulated by the cerebellum. During head motion, the VOR stabilizes the retinal image by producing an opposite synchronized eye movement. If the retinal image is not steady enough on the retina, visual acuity will drop. The cerebellum integrates eye velocity, retinal slip, motor feedback and vestibular afferences to modulate the VOR. Therefore, inadequate VOR generation or modulation will result in visual loss under dynamic conditions. At the end of the session, participants should be able to identify VOR dysfunction and organize proper investigations accordingly.