4. Bone conduction is the conduction of sound to the inner ear through the
bones of the skull. It is the reason why a person's voice sounds different to
him or her when it is recorded and played back. People perceive their own
voices to be lower and fuller than others hear it.
Abbreviation: BC
5. Both the right and left ear
work together to enable you
to selectively listen to one of
several sounds.
Abbreviation: AU
6. Inflammation or infection of the middle ear. "Otitis"
means inflammation of the ear, and "media" means
middle.
Abbreviation: OM
7. The condition of the normal eye when parallel
rays are focused exactly on the retina and vision is
perfect.
Abbreviation: EM
8. A form of
strabismus where
the eyes are
deviated outward.
(opposite of
esotropia)
Abbreviation: XT
10. The extraocular muscles are the six muscles that control
the movements of the eye. The actions of the extraocular
muscles depend on the position of the eye at the time of
muscle contraction.
Abbreviation: EOM
11. Visual acuity often is referred to as “Snellen” acuity. The chart and the
letters are named for a 19th-century Dutch ophthalmologist Hermann
Snellen (1834–1908) who created them as a test of visual acuity.
It is an indication of the clearness of one’s vision. In other words, the
measurement of how well a person sees. The word “acuity” comes from
the Latin acuitas, which means sharpness.
Abbreviation: VA