Adults (18 years or older):

•  Moderate to profound sensorineural hearing loss (SNHL)  bilaterally
•  50% or less on the HINT* test in the ear to be implanted
•  60% or less on the HINT test in the opposite ear, or binaurally
•  Post-linguistic onset of Moderate to profound SNHL
•  No medical contraindications
•  Highly motivated
•  Realistic expectations

Children (25 months to 17 years 11 months):

•  Severe to profound SNHL
•  Pre-linguistic or post-linguistic onset of moderate to profound SNHL
•  MLNT** scores of 30% or less in best aided condition (25 months to 4 years old)
•  LNT*** scores of  30% or less in best aided condition (all others)
•  Lack of progress in the development of auditory skills
•  No medical contraindications
•  High motivation and appropriate expectations of  family and (when appropriate) the child

(Age 12 months to 24 months):

•  Profound SNHL bilaterally
•  Lack of progress in the development of auditory skills
•  No medical contraindications
•  High motivation and appropriate expectations from family
  

*HINT=This is a sentence recognition test

**MLNT=This is a speech preception test for very young children

***LNT=This is a speech perception test for older children