This document defines abbreviations related to the special senses of the eye and ear. It explains that PE tube stands for pressure equalizing tube, which is surgically placed in a child's eardrum to drain fluid and equalize pressure. It also defines EENT as eyes, ears, nose and throat; BC as bone conduction; dB as decibels, which measure sound intensity; and AU as both ears. Additionally, it provides the meanings of several other medical abbreviations including OM, EM, XT, OS, EOM and VA.

1. Chapter 13
Special Senses:
The Eye & Ear
By: Litrina Valera

2. Overview
 In this presentation, you will learn the
abbreviations that relate to the special
senses.

3. PE Tube
 Stands for: Pressure equalizing tube.
 The PE tube is a small tube surgically
placed in a child’s eardrum to help
drain the trapped fluid inside the ear. It
also equalizes pressure between the
middle ear cavity and the atmosphere.

4. EENT
 Stands for: eyes, ears, nose and
throat.

5. BC
 Stands for: Bone conduction
 It is the conduction of sound to the
inner ear, through the bones of the
skull.
 BC is reason why our voices sound different
to us when we hear ourselves when
recorded and played back. We perceive our
voices to be a higher pitch than how others
actually hear it.

6. dB
 Stands for: Decibel
 dB measures the intensity or loudness
of a sound.
 0 decibels is the quietest sound
measured, and 120 dB is the loudest
sound measured.

7. AU
Stands for: Both ears

8. OM
 Stands for: Otitis media
 Seen frequently in children; also
reffered to as a middle ear infection.
 Fluid accumulates in the middle ear
cavity, the fluid may be watery or full
of pus.

9. EM
 Stands for: Emmetropia
 State of normal vision.

10. XT
 Stands for : exotropia
 Outward turning of the eye.
 Also called wall-eyed.

11. OS
 Stands for: Left Eye

12. EOM
 Stands for: Extra Ocular Movement

13. VA
 Stands for: Visual Acuity
 Measurement of the sharpness of a
persons vision, usually using the
Snellen chart and having a person
read it from 20 feet away.

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