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  • 1. Special Senses: The Eye and Ear
    Biology 120
    Presentation 13
  • 2. Eye and Ear
  • 3. Termiology
    Pressure equalizing tube
    Eye, ear, nose, and throat
    Bone conduction
    Both ears
    Otitis media
    Left eye
    Extraocular movement
    Visual Activity
  • 4. Pressure Equalizing Tube
    Abbreviation- PE Tube
    Two most common reasons for a PE Tube are because of reoccurring ear infections or a build up of fluid in the ear leading to hearing loss.
  • 5. Bone conduction
    Abbreviation- BC
    BC is the conduction of sound to the inner ear and bones of the skull.
  • 6. Otitis media
    Abbreviation- OM
    Commonly referred to as a middle ear infection
    Usually proceeded by an upper repiratory infection during which pathogens move from the pharynx to the middle ear. Fluid accumulates in the ear.
    Children are prone to it because the angle of their Eustachian tube is more horizontal and shorter
    If infection is cause by bacteria, treatment can be antibiotics. If viral, the infection has to clear up on its own.
  • 7. Emmetropia
    Abbreviation EM
    Means “the state of normal vision”
  • 8. Exotropia
    Abbreviation- XT
    Means outward turning of the eye, wall-eyed. It is a muscle weakness of the eye.
  • 9. Visual activity
    Abbreviation- VA
    Means the measurement of the sharpness of a patient’s vision.
    A Snellan chart is used for this test in which a patient identifies letters from a distance of 20 feet.
  • 10. Other terminology
    Both ears-abbreviation AU
    Left eye- abbreviation OS
    Eye, ear, nose, and throat- abbreviation EENT
  • 11. References
    Fremgen, Bonnie F. and Suzanne S. Frucht. Medical Terminology; A living language. New Jersey: Pearson Education, 2009