Sight Vs Hearing

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The condition of not having the power of hearing or having impaired hearing. Hearing loss. A deaf person has little to no hearing. Hearing loss may occur in one or both ears. Hearing loss can be categorized as mild, moderate, moderate-severe, severe, or profound. Without a newborn hearing test, the average age at which congenital deafness is diagnosed is 2 years. Children whose deafness is treated in the first months of life gain critical time and get far better on development tests than those whose diagnosed is delayed. People can go deaf suddenly as a complication of a virus, lose their hearing over time because of disease, nerve damage, or injury caused by noise. About 3 out of 1,000 babies is born deaf because of genetic factors. About

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