What does visual acuity refer to
sharpness of vision
Refraction
the ability of the eye to bend light rays so that they can be focused on the retina
What condition does a person have if they cannot see objects at a distance
myopia
A person who cannot see close objects has what condition
hyperopia
A decrease in the elasticity of the lens as a result of aging
presbyopia
An optometrist cannot perform
eye surgery
Individual who interprets and fills ophthalmic prescriptions such as prescriptions for glasses
optician
What is the snellen chart used for
assess visual acuity
Snellen Big E chart is used for
Preschoolers
At what distance do you perform the Snellen eye test
20 feet
When performing the Snellen eye test you should ask the patient to close the eye not being tested
False
A patient with a distance visual acuity of 20/40 in the left eye, what distance would a person with normal acuity be able to read the same line
40 feet
With the right eye, a patient reads the line marked 20/30 with one error. How do you chart this
OD 20/30-1
Near visual acuity testing is conducted with the patient holding the test card
14 to 16 inches away
What is the most common color vision defect
congenital color vision defects
How much time should the patient be given to identify the number on each Ishihara color plate
3 seconds
When not being used Ishihara charts must be protected from
light
When performing an eye irrigation, the solution should be released
at the inner canthus
An eye instillation may be performed to
treat an eye infection
Range of frequencies for normal speech
300 to 4,000 Hz
Intense noise can result in what type of hearing loss
sensorineural hearing loss
Serious otitis media can result in what type of hearing loss
conductive hearing loss
Example of a tuning fork test
Weber test
What is the most specific form of hearing test
audiometry
Tympanometry is the most useful in diagnosing
serous otitis media
How do you straighten the external auditory canal of an adult
pulling the ear upward and backward
Impacted cerumen can be softened
instilling several drops of warm mineral oil into the ear
During ear irrigation, what techniques is performed to prevent injury to the tympanic membrane
injecting the irrigating solution toward the roof of the ear canal
Ear instillation may be performed to treat
ear infections
After performing an ear instillation, patients should be instructed to lie on the unaffected side to
allow complete distribution of the medication
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