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The transparent part of the eye that covers the pupil and the iris is the


A) sclera.
B) cornea.
C) choroid.
D) lens.

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The range of frequencies for normal speech is


A) 80 to 120 db.
B) 512 to 1024 Hz.
C) 300 to 4000 Hz.
D) 6000 to 8000 Hz.

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The function of cerumen is to


A) inhibit the growth of pathogens.
B) lubricate and protect the ear canal.
C) facilitate the transmission of sound waves.
D) stabilize air pressure in the middle ear.

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B

A patient has a distance visual acuity of 20/40 in the left eye.At what distance would a person with normal acuity be able to read this line?


A) 20 feet
B) 30 feet
C) 40 feet
D) 60 feet

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Tympanometry is most useful in diagnosing patients with


A) serous otitis media.
B) conductive hearing loss.
C) sensorineural hearing loss.
D) auditory nerve damage.

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Which of the following is the most specific type of hearing test?


A) Tuning fork test
B) Audiometry
C) Whisper test
D) Otoscopy

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How much time should the patient be given to identify the number on each Ishihara color plate?


A) 3 seconds
B) 10 seconds
C) 1 minute
D) As long as is needed

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The outer layer of the eye,composed of tough,white,fibrous connective tissue,is the


A) sclera.
B) cornea.
C) choroid.
D) conjunctiva.

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Which of the following can result in conductive hearing loss?


A) Serous otitis media
B) Ototoxicity
C) Old age
D) Pierced ears

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Which of the following represents a decrease in the elasticity of the lens as a result of the aging process?


A) Glaucoma
B) Presbyopia
C) Hyperopia
D) Cataracts

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Which of the following structures functions in maintaining equilibrium?


A) Cochlea
B) Auditory nerve
C) Ear ossicles
D) Semicircular canals

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After performing an ear instillation,the patient is instructed to lie on the unaffected side to


A) avoid pressure on the tympanic membrane.
B) allow complete distribution of the medication.
C) allow drainage of excess medication.
D) prevent dizziness.

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B

Visual acuity refers to


A) sharpness of vision.
B) the ability to distinguish colors.
C) an error of refraction.
D) a weakness in muscle tone of the eye.

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An eye instillation may be performed to


A) remove a foreign object from the eye.
B) remove eye drainage.
C) flush out a harmful chemical.
D) treat an eye infection.

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The function of the ear auricle is to


A) transmit sound waves to the brain.
B) maintain balance and equilibrium.
C) receive and collect sound waves.
D) prevent the entrance of microorganisms into the ear.

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When performing an eye irrigation,the solution should be released


A) at the outer canthus.
B) toward the upper eyelid.
C) directly onto the cornea.
D) at the inner canthus.

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What is the most common color vision defect?


A) Acquired color vision defects
B) Total color blindness
C) Congenital color vision defects
D) Green-blue color vision defect

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Using the right eye,the patient reads the line marked 20/30 with one error.How would you chart this?


A) AS 20/30 - 1
B) OS 20/30 - 1
C) OD 20/30 - 1
D) AD 20/30 - 1

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A person who cannot see close objects has a condition known as


A) myopia.
B) strabismus.
C) cataracts.
D) hyperopia.

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D

Refraction is


A) dilation of the pupil.
B) ability of the eye to bend light rays so that they can be focused on the retina.
C) ability of the eye to distinguish colors.
D) transmission of light stimuli from the optic nerve to the brain.

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