Hearing is significantly impaired or completely lost without an obvious trigger - if the cause is a sudden hearing loss or ear infarction, this hearing impairment is usually temporary.
Hearing on one side only can lead to disadvantages and problems in everyday life - but, unilateral cochlear implantation can help.
Listening with both ears enables optimal access to sound. There are different ways to achieve this.
Everyone should hear with two ears in order to be able to use the binaural hearing functions. There are different ways to achieve this.
Humans generally have two ears - and for some hearing functions, both have to work simultaneously.
Our ears are not redundant systems and the second ear is not a reserve - only those who hear well on both sides can develop all the hearing abilities we need in everyday life.