Quick Knowledge
Parts of the Ear
- Outer Ear
- Middle Ear
- Inner Ear
Outer Ear consists of
- Pinna/Auricle
- Ear Canal/Auditory Canal
Middle Ear consists of
- Eardrum
- Tympanic Cavity
- Ossicles (malleus, incus, stapes)
Inner Ear consists of
- Oval window
- Semicircular ducts
- Cochlea
- Auditory Tube
Types of Hearing Loss
- Conductive Hearing Loss
- Sensorineural Hearing Loss
- Mixed Hearing Loss
Causes for Conductive hearing loss
- Deformation of outer ear, ear canal, or middle ear structures
- Fluid in middle ear due to cold
- Ear infection
- Allergies
- Poor Eustachian tube function
- Perforated eardrum
- Benign tumors
- Impacted earwax
- Infection in the ear canal
- Foreign body in the ear
- Otosclerosis
Sensorineural hearing loss
- Exposure to loud noise
- Deformation of the inner ear
- Head trauma
- Virus or disease
- Autoimmune inner ear disease
- Hearing loss that runs in the family
- Aging (presbycusis)
- Meniere’s Disease
- Tumors
- Otosclerosis
Degree of Hearing Loss
Normal – (-) 10 dB to 15dB
Slight – 16dB to 25dB
Mild – 26dB to 40dB
Moderate – 41dB to 55dB
Moderately Severe – 56dB to 70dB
Severe – 71dB to 90dB
Profound – 91+dB
Causes for Sensorineural hearing loss
- Exposure to loud noise
- Deformation of the inner ear
- Head traum
- Virus or disease
- Autoimmune inner ear disease
- Hearing loss that runs in the family
- Aging (presbycusis)
- Meniere’s Disease
- Tumors
- Otosclerosis
Types of Hearing Tests
- Pure Tone Audiometry
- Pure Tone Audiometry
- Middle Ear Analysis
- Oto-acoustic Emission
Steps in Audiologic (hearing) Evaluation:
- To check whether there is hearing loss
- To analyze the cause of hearing loss
- To determine the degree & config. Of hearing loss
- To provide best treatment options
Types of Hearing Aid
- Analog
- Digital
Different Styles of Hearing Aid
- IIC – Invisible In Canal
- CIC – Completely In Canal
- ITC – In The Cana
- ITE – In The Ear
- BTE – Behind The Ear
- RIE – Receiver In the Ear
- Pocket Models
What is Hyperacusis and its causes?
Generally, people would consider that there is a hearing loss when sounds become muffled. If someone hears fewer sounds, then.
Read More
You Need to Know About Auditory.
What Is an Auditory Brainstem Response (ABR) Test? The Auditory Brainstem Response (ABR) test is an advanced, objective hearing assessment.
Read More