Deck 15: Visual Assessment

Question 1

If a patient comes in wearing glasses, they should be worn during a visual acuity test. True or false?

Answer 1

True

Question 2

What should a patient NOT do during a visual acuity test?

A)Say the letters they can read
B)Wear their bifocal glasses
C)Squint
D)Cover the eye that is not being tested

Answer 2

Squint

Question 3

In order to read traffic signs, a patient should have corrected vision of at least

A)20/40.
B)20/50.
C)20/60.
D)20/70.

Answer 3

20/40.

Question 4

Most visual acuity charts are calibrated with the intention that the patient stands how far from it?

A)40 feet
B)30 feet
C)20 feet
D)15 feet

Question 5

If a person's vision is 20/15, the number that denotes the distance from which a normal eye can see what the patient can see at 20 feet is known as

A)numerator.
B)denominator.
C)20 feet.
D)15 feet.

Question 6

What should the examiner do if a patient cannot read the biggest letter on a chart even after walking closer?

A)Hold out fingers to test vision
B)Use a slit lamp to test vision
C)Whisper the letter to the patient
D)Write "cannot see" on the patient's chart

Question 7

The distance of 20 feet is used in visual acuity tests because it represents

A)normal vision.
B)a safe distance.
C)optical infinity.
D)optical perfection.

Question 8

Whether or not refractive error is the cause of impaired vision can be confirmed with a

A)Snellen chart.
B)pinhole visual acuity test.
C)potential acuity meter.
D)contrast sensitivity test.

Question 9

Jaeger notation, the point system, and the Snellen M-unit are units of measure used in recording what type of visual acuity?

A)Far
B)Near
C)Sidelong
D)Upside

Question 10

The ability of human vision to discern shapes by their relative lightness and darkness is known as which of the following?

A)Light sensitivity
B)Shade sensitivity
C)Contrast detection
D)Contrast sensitivity

Question 11

During a visual acuity assessment, if the patient is able to clearly read the 20/20 line but misses one letter, the acuity is recorded as

A)20/20
B)20/20 -1
C)20/21
D)21/20

Question 12

Allen cards can be used to measure the visual acuity of

A)the elderly.
B)teenagers.
C)patients with astigmatism.
D)preschool-age children.

Question 13

In patients with nystagmus, visual acuity often improves dramatically when vision is assessed

A)monocularly.
B)binocularly.
C)with a pinhole occlude.
D)30 feet away.

Question 14

Which of the following is a test that can help detect central serous retinopathy?

A)Contrast sensitivity
B)Pinhole acuity
C)Macular photostress test
D)Glare test

Question 15

Which of the following allows the patient to visualize a Snellen chart without interference from a clouded lens?

A)Interferometer
B)PAM
C)Near-vision testing
D)Lensometer

Question 16

The best visual target for a neonate is a

A)human face.
B)toy.
C)finger.
D)Snellen chart.

Question 17

Vertex distance can be measured with a

A)cross cylinder.
B)PAM.
C)distometer.
D)pinhole disc.

Question 18

Which of the following is the easiest letter in the alphabet to recognize?

A)T
B)L
C)B
D)E

Question 19

The angle that an object's outermost rays subtend on the retina, and is measured in degrees or minutes of arc, is called the

A)visual angle.
B)entrance angle.
C)sight angle.
D)focus angle.

Question 20

Theminimum angle resolvable by the normal human eye is about __ minutes of arc.

A)1
B)2
C)3
D)4

Question 21

Distance vision is optimally tested in a brightly illuminated room. True or false?

Question 22

The cornea and the lens make up

A)the photoreceptors.
B)the vitreous humor.
C)the media.
D)the primary refractive surface.

Question 23

It is always preferable to have a patient view a whole line of letters rather than single optotypes. True or false?

Question 24

If the patient can accurately identify when a light is being shown to the eye, it isrecorded as

A)CF.
B)LP -c P.
C)NLP.
D)LP.

Question 25

A patient with 6/18 vision has better than 20/20 vision. True or false?

Question 26

Convert 5/100 to 20/x.

A)20/200
B)20/400
C)20/50
D)20/100

Question 27

Light perception is the ability to see light. Light projection is the ability to

A)refract light.
B)determine the color of the light.
C)follow the light.
D)locate where the light is coming from.

Question 28

The letters, numbers, pictures, etc. used on standard visual acuitycharts are known as

A)symbols.
B)signs.
C)optotypes.
D)diagnostics.

Question 29

Under normal circumstances, the first test administered during a visit to an ophthalmologist's office is

A)keratometry.
B)visual acuity assessment.
C)tonometry.
D)corneal topography.

Question 30

Near vision is best assessed in a brightly illuminated room. True or false?

Question 31

Malingering and hysterical visual loss are the two types of

A)inhibiting visual loss.
B)psychological visual loss.
C)fictitious visual loss.
D)dire visual loss.

Question 32

The optokinetic nystagmus (OKN) drum or strip is used to

A)establish the existence of vision.
B)test contrast sensitivity.
C)determine visual acuity.
D)determine the source of refractive errors.