This document defines and provides brief descriptions for several medical terms related to the special senses of the eye and ear. It includes definitions for terms like PE tube, EENT, bone conduction, both ears, otitis media, emmetropia, exotropia, left eye, extraocular movement, and visual acuity.

1. Special Senses:
The Eye and Ear
Chapter 13 Section 13J
By: Stephanie Goodman

2. Pressure Equalizing Tube
Abbreviation: PE Tube
A PE tube is a small tube that is surgically
placed in a child’s ear to assist in
drainage of fluid.
It is used for children with recurrent ear
infections.

3. Eye, Ear, Nose, and Throat
Abbreviation: EENT
The study of the eyes, ears, nose, and throat.
This branch of medicine is called otolaryngology.

4. Bone
Conduction
Abbreviation: BC
The conduction of sounds to
the inner ear through the bones
of the skull.
Hearing aids, and assisted
listening devices are bone
conduction products.

5. Both Ears
Abbreviation: AU (Auris Utraque)
Auris is the Latin word for “Ear” and Utraque is
the Latin word for “both, each, or together”

6. Otitis Media
Abbreviation: OM
Otitis Media is the
inflammation of the middle
(media) ear which occurs
between the tympanic
membrane and the inner ear.
Common in children.
It heals quickly.

7. Emmetropia
Abbreviation: EM
Emmetropia is the state of
normal vision.

8. Exotropia
Abbreviation: XT
Muscle weakness in the eye
relating to strabismus.
Often referred to as cocked
eyes, or lazy eye.
Can be corrected with
glasses, eye exercise, or
surgery.

9. Left Eye
Abbreviation: OS (Ocular Sinister)

10. Extraocular
Movement
Abbreviation: EOM
Voluntary conjugate movement of the
eyes.

11. Visual Acuity
Abbreviation: VA
Acuteness or clearness of
vision.