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Chapter 21 Vocab

TermDefinition
Astigmatism A refraction error that causes distorted and blurred vision for both near and far objects due to oval shaped cornea.
Audiometer An instrument used to measure hearing acuity quantitatively for various frequencies of sound waves.
Canthus The junction of the eyelids at either corner of the eye.
Cerumen Earwax: protects and lubricates the ear.
Hyperopia Farsightedness.
Impacted Wedged tightly together to be immovable.
Instillation The dropping of liquid into a body cavity.
Irrigation The washing of a body canal with flowing solution.
Myopia Nearsightedness.
Otoscope An instrument used to examine the external ear canal and tympanic membrane.
Presbyopia A decrease in elasticity of the lens that occurs with aging, resulting in decreased ability to focus on close objects.
Refraction The deflection or bending of light rays by a lens.
Tympanic Membrane A thin, semitransparent membrane between the external ear canal and the middle ear that receives and transmits sound waves. Also known as the eardrum.
Created by: SalBuddoo
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