Single-Sided Deafness
Profound loss in one ear with normal hearing in the other
Overview
Losing all useful hearing on one side, from sudden loss, acoustic neuroma, or Meniere, removes sound localization and speech understanding in noise on that side. Head shadow effect: sounds arriving from the deaf side never reach the good ear clearly. CROS hearing aids route sound wirelessly to the good ear. BAHA on the deaf side transmits through bone. Cochlear implantation is increasingly used, unique in restoring binaural input to a deaf ear. Safety concerns, traffic, cycling, matter in daily life.
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