Every child benefits from the early detection of hearing loss. Audiologic testing in Lancaster, PA is simple and painless and prevents the development of speech problems or delayed learning. Here are some examples of common hearing tests available to children.
Otoacoustic Emissions Test
This test is typically included in the screenings performed on newborns. A sound is played that causes the hair cells in the inner ear to vibrate and produce and almost inaudible sound. A problem is detected when no sound is produced. The issue may be due to a blockage in the ear canal, damage to the hair cells or because of fluid in the ear.
Pure Tone Testing
Audiologic testing in Lancaster, PA is performed on children as young as six months as long as they are able to provide reliable responses. Older children are asked to raise their hand or give another specific response, and younger children are directed to look in the direction of the sound. It detects the softest sounds the child hears at various frequencies and is more accurate if the child will tolerate wearing headphones, so each ear is individually tested.
Middle Ear Testing
Middle ear testing is used for children at preschool age. There are various types of tests in this category. Tympanometry looks for damage or blockage in the middle ear and is used when ear infections are a frequent problem. Acoustic reflex measures determine the exact location of the hearing problem and static acoustic impedance testing locates any damage to the eardrum.
Continued Speech Testing
Speech testing is performed to determine if the child is able to hear words properly in a noisy environment and is similar to pure tone testing. Their recognition of the words and their ability to repeat them back properly are tested. The level of hearing loss is determined by how many words are repeated back correctly at least 50 percent of the time at specific audible levels.
Approximately 1.4 out of 1000 babies are found to have hearing loss at birth and 5 out of every 1000 children aged 3-17 are diagnosed. The CDC reports that over 12 percent of all children will have some form of a permanent hearing loss by the time they turn 19, mostly due to exposure to loud noises. Any parent concerned about their child potentially suffering from hearing loss can visit to schedule a hearing assessment.
