Chapter 13 Presentation.

1. Peter Belford

2. Terms and Abbreviations
 Pressure Equalizing Tube – PE Tube
 Eye, Ear, Nose and Throat – EENT
 Bone Conduction – BC
 Both Ears – AU
 Otitis Media – OM
 Emmetropia – EM
 Exotropia – XT
 Left Eye - OS
 Extraocular Movement – EOM
 Visual Acuity - VA

3. PE Tube
 Equalize pressure between the middle
ear and the atmosphere.
 Assists in drainage of trapped fluid.

4. EENT
 Eyes, Ears, Nose, and Throat.

5. BC
 Using the bones of the skull to conduct
sound waves. Some hearing aids
employ this method and are almost as
effective as normal hearing.

6. Both Ears - AU
 Can either stand for both ears together:
Aures Unitas or each ear: Aures
Uterque.

7. OM
 Commonly found in children after an
upper respiratory infection. Referred to
as a middle ear infection. Pathogens
cause fluid to accumulate, could be
either watery (serous otitis media) or
pus (purulent otitis media).

8. EM

9. XT
 Outward turning of the eye. Also known
as wall-eyed. Cause by muscle
weakness.

10. OS
 Oculus Sinister or Left Eye. Not to be
confused with the late TLC member.

11. EOM
 Movement of the eye independent of the
skull.

12. VA
 Test of how well or poor someone sees.
May indicate a need for glasses. Often
performed using a Snellen Chart.

13. Peter Belford