Quiz For Introduction to Low Vision

1 point(s)

The low vision patient may be defined as a person who: a. requires

spectacle prescription exceeding ± 4.00 diopters

Correct Incorrect Correct answer

is a poor candidate for contact lenses

Correct Incorrect Correct answer

experiences impaired vision that cannot be corrected by ordinary glasses, contact lenses, medical treatment and/or surgery

Correct Incorrect Correct answer

is legally blind

Correct Incorrect Correct answer

1 point(s)

A common definition of a person who is considered “legally” blind is one who:

can perceive light only, or has no vision at all

Correct Incorrect Correct answer

has a best corrected central visual acuity of 20/200 or less in the better eye, or a visual field of no more that 20 degrees in the better eye

Correct Incorrect Correct answer

experiences significant reduction of visual function that cannot be corrected to the normal range by ordinary eyeglasses or contact lenses

Correct Incorrect Correct answer

suffers from night blindness

Correct Incorrect Correct answer

1 point(s)

The number of adults 75 years of age or older that report that he or she is either moderately or severely impaired is:

one in four

Correct Incorrect Correct answer

one in six

Correct Incorrect Correct answer

one in ten

Correct Incorrect Correct answer

one in twenty

Correct Incorrect Correct answer

1 point(s)

The most common cause of visual impairment is:

Glaucoma

Correct Incorrect Correct answer

Degenerative myopia

Correct Incorrect Correct answer

Retinitis pigmentosa

Correct Incorrect Correct answer

Macular degeneration

Correct Incorrect Correct answer

1 point(s)

Visual acuity refers to:

the ability to discern fine detail

Correct Incorrect Correct answer

the ability to perceive colors

Correct Incorrect Correct answer

excellent peripheral vision

Correct Incorrect Correct answer

20/100 or better at 40 cm

Correct Incorrect Correct answer

1 point(s)

When measuring visual acuity, the distance of 20 feet is used because:

no accommodation is required by the emmetropic eye to focus light rays on the retina

Correct Incorrect Correct answer

it approximates optical infinity

Correct Incorrect Correct answer

light rays coming from that distance and beyond are considered to be parallel

Correct Incorrect Correct answer

all of the above

Correct Incorrect Correct answer

1 point(s)

Snellen optotypes are:

measurements of visual field

Correct Incorrect Correct answer

specially formed letters arranged in rows of decreasing letter size

Correct Incorrect Correct answer

indicative of a visual impairment

Correct Incorrect Correct answer

low vision aids

Correct Incorrect Correct answer

1 point(s)

In the Snellen acuity recording 20/100, the number 100 represents:

distance in feet from the patient to the chart

Correct Incorrect Correct answer

distance in feet at which a normal eye can see a particular line on the chart

Correct Incorrect Correct answer

size of the largest optotype seen by the patient

Correct Incorrect Correct answer

distance in meters from the patient to the chart

Correct Incorrect Correct answer

1 point(s)

The circles of eccentricity on a visual field chart refer to the:

contours obtained with a single target of a particular brightness

Correct Incorrect Correct answer

boundaries of a normal patient's island of vision

Correct Incorrect Correct answer

concentric circles at 10° intervals

Correct Incorrect Correct answer

holes within the coutours of an otherwise normal visual field

Correct Incorrect Correct answer

1 point(s)

Generally, the 0° point on visual field charts of both the right and the left eye is located at the:

extreme right on the horizontal meridian, and the other meridians are measured progressively in a clockwise direction

Correct Incorrect Correct answer

extreme left on the horizontal meridian, and the other meridians are measured progressively in a clockwise direction

Correct Incorrect Correct answer

extreme right on the horizontal meridian, and the other meridians are measured progressively in a counterclockwise direction

Correct Incorrect Correct answer

top of the vertical meridian, and the other meridians are measured progressively in a counterclockwise direction

Correct Incorrect Correct answer

1 point(s)

On visual field charts, the physiologic blind spot appears in the:

center of the visual field

Correct Incorrect Correct answer

nasal visual field

Correct Incorrect Correct answer

temporal visual field

Correct Incorrect Correct answer

inferior visual field

Correct Incorrect Correct answer

1 point(s)

A defect in the inferior temporal retina will affect the:

inferior temporal field of vision

Correct Incorrect Correct answer

inferior nasal field of vision

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superior temporal field of vision

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superior nasal field of vision

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1 point(s)

The most common cause of severe vision loss among people over 65 is:

Glaucoma

Correct Incorrect Correct answer

Macular degeneration

Correct Incorrect Correct answer

Retinitis pigmentosa

Correct Incorrect Correct answer

Diabetic Retinopathy

Correct Incorrect Correct answer

1 point(s)

The macula is responsible for

night vision

Correct Incorrect Correct answer

peripheral vision

Correct Incorrect Correct answer

central or straight ahead vision

Correct Incorrect Correct answer

light perception

Correct Incorrect Correct answer

1 point(s)

The fovea:

contains a very high concentration of cone cells

Correct Incorrect Correct answer

must have bright light to function normally

Correct Incorrect Correct answer

is the only area of the retina capable of 20/20 vision

Correct Incorrect Correct answer

all of the above

Correct Incorrect Correct answer

1 point(s)

A test that patients can perform on themselves that can reveal signs of wet macular degeneration is:

tonometry

Correct Incorrect Correct answer

visual field

Correct Incorrect Correct answer

visual acuity

Correct Incorrect Correct answer

Amsler grid

Correct Incorrect Correct answer

1 point(s)

Symptoms of macular degeneration may include:

blurring
straight lines appearing wavy
dark or empty areas in the center of vision
loss peripheral vision

1 only

Correct Incorrect Correct answer

1 & 2

Correct Incorrect Correct answer

1, 2, & 3

Correct Incorrect Correct answer

1, 3, & 4

Correct Incorrect Correct answer

1 point(s)

An opaque area in the normally transparent lens of the eye is:

a lesion

Correct Incorrect Correct answer

a cataract

Correct Incorrect Correct answer

glaucoma

Correct Incorrect Correct answer

optic atrophy

Correct Incorrect Correct answer

1 point(s)

A cataract is:

a clouding of the vitreous gel

Correct Incorrect Correct answer

a benign growth on the conjunctiva

Correct Incorrect Correct answer

a branch-shaped corneal ulcer

Correct Incorrect Correct answer

an opacification of the crystalline lens

Correct Incorrect Correct answer

1 point(s)

The most common type of cataract, and the one associated with aging is:

senile cataract

Correct Incorrect Correct answer

congenital cataract

Correct Incorrect Correct answer

nuclear cataract

Correct Incorrect Correct answer

premature cataract

Correct Incorrect Correct answer

1 point(s)

Common symptoms of a cataract include:

blurring
dimming of vision
glare
distortion

1 & 3

Correct Incorrect Correct answer

2 & 4

Correct Incorrect Correct answer

1, 2, & 3

Correct Incorrect Correct answer

1, 2, 3, & 4

Correct Incorrect Correct answer

1 point(s)

The most common form of glaucoma is:

angle-closure glaucoma

Correct Incorrect Correct answer

open-angle glaucoma

Correct Incorrect Correct answer

normal or low tension glaucoma

Correct Incorrect Correct answer

congenital glaucoma

Correct Incorrect Correct answer

1 point(s)

Primary open-angle glaucoma:

is not a threat to vision

Correct Incorrect Correct answer

can cause permanent damage to the optic nerve

Correct Incorrect Correct answer

develops rapidly and suddenly

Correct Incorrect Correct answer

accounts for a small percentage of all glaucomas

Correct Incorrect Correct answer

1 point(s)

Vision loss is ___________time more common in persons with diabetes than those without diabetes.

5 times

Correct Incorrect Correct answer

10 times

Correct Incorrect Correct answer

25 times

Correct Incorrect Correct answer

no greater risk

Correct Incorrect Correct answer

1 point(s)

Diabetic retinopathy:

is the leading cause of legal blindness among working adults in the United States
can be caused by fluctuations on the blood sugar level which can damage the blood vessels in the eye
is often preventable
is very painful

1 & 2

Correct Incorrect Correct answer

1 & 3

Correct Incorrect Correct answer

1, 2 & 3

Correct Incorrect Correct answer

1, 2, 3, & 4

Correct Incorrect Correct answer

1 point(s)

Retinopathy means:

retinal detachment

Correct Incorrect Correct answer

scar tissue damage to the retina

Correct Incorrect Correct answer

blood vessels growing on the surface of the retina

Correct Incorrect Correct answer

damage to the retina

Correct Incorrect Correct answer

1 point(s)

Optic atrophy, a general term used to describe the effect of a number of conditions effecting the optic nerve, may be caused by:

inadequate blood supply to the eye
a pigmented lesion on the macula
a dislocated crystalline lens
inflammation from viral diseases

1 & 3

Correct Incorrect Correct answer

1 & 4

Correct Incorrect Correct answer

2 & 4

Correct Incorrect Correct answer

4 only

Correct Incorrect Correct answer

1 point(s)

Medication for glaucoma may be:

topical

Correct Incorrect Correct answer

oral

Correct Incorrect Correct answer

both topical and oral

Correct Incorrect Correct answer

none of the above

Correct Incorrect Correct answer

1 point(s)

Degenerative myopia may be characterized by a minus refractive error in association with:

increase in the length of the globe
a type of retinal degeneration arising from blood vessels entering the macula from the underlying layers of the retina
a pigmented lesion of the macula called Fuch’s spot
increase in the intraocular pressure (IOP)

1 only

Correct Incorrect Correct answer

1 & 2

Correct Incorrect Correct answer

1, 2, & 3

Correct Incorrect Correct answer

1, 2, 3, & 4

Correct Incorrect Correct answer

1 point(s)

Macula edema is:

"leaking" blood vessels

Correct Incorrect Correct answer

a diseased fovea

Correct Incorrect Correct answer

damaged blood vessels in the eye

Correct Incorrect Correct answer

fluid collecting behind the macula

Correct Incorrect Correct answer

1 point(s)

Laser photocoagulation is:

cataract surgery

Correct Incorrect Correct answer

open-angle treatment

Correct Incorrect Correct answer

photo procedure to better see blood vessels in the retina

Correct Incorrect Correct answer

surgery for diabetic retinopathy

Correct Incorrect Correct answer

1 point(s)

Nyctalopia is:

swelling

Correct Incorrect Correct answer

type of laser surgery used in glaucoma treatment

Correct Incorrect Correct answer

loss of central vision

Correct Incorrect Correct answer

night blindness

Correct Incorrect Correct answer

1 point(s)

Retinitis pigmentosa is characterized by:

increase in intraocular pressure

Correct Incorrect Correct answer

loss of central vision

Correct Incorrect Correct answer

a disturbance of the pigmentary layer of the retina

Correct Incorrect Correct answer

opacities in the transparent structures of the eye

Correct Incorrect Correct answer

1 point(s)

Moving closer to an object in order to enlarge the retinal image is a way to create:

relative distance magnification

Correct Incorrect Correct answer

angular magnification

Correct Incorrect Correct answer

transverse magnification

Correct Incorrect Correct answer

4 x magnification

Correct Incorrect Correct answer

1 point(s)

Low vision aids that can help achieve relative distance magnification are:

convex lenses mounted in a spectacle frame
electronic magnifying devices
telescopes
absorptive lenses

1 only

Correct Incorrect Correct answer

1, 2, & 3

Correct Incorrect Correct answer

2, 3, & 4

Correct Incorrect Correct answer

1, 2, 3, & 4

Correct Incorrect Correct answer

1 point(s)

When the object itself is enlarged such as large, bold type in books, news- papers and magazines, it is an example of:

relative distance magnification

Correct Incorrect Correct answer

angular magnification

Correct Incorrect Correct answer

no magnification

Correct Incorrect Correct answer

linear magnification

Correct Incorrect Correct answer

1 point(s)

Nonoptical aids can improve visual function by:

improved illumination
reflection control
enhanced contrast
linear magnification

1 & 2

Correct Incorrect Correct answer

1 & 3

Correct Incorrect Correct answer

1, 2, & 3

Correct Incorrect Correct answer

1, 2, 3, & 4

Correct Incorrect Correct answer

1 point(s)

Hand magnifiers are rated according to power. A 5X magnification is equivalent to:

5 diopters

Correct Incorrect Correct answer

10 diopters

Correct Incorrect Correct answer

15 diopters

Correct Incorrect Correct answer

20 diopters

Correct Incorrect Correct answer

1 point(s)

While viewing an image with a hand magnifier, the patient:

uses their distance prescription

Correct Incorrect Correct answer

uses their near prescription

Correct Incorrect Correct answer

uses no prescription

Correct Incorrect Correct answer

uses telescopes

Correct Incorrect Correct answer

1 point(s)

Which of the following is not a type of telescope:

hand held monoculars

Correct Incorrect Correct answer

hand held binoculars

Correct Incorrect Correct answer

hand magnifiers

Correct Incorrect Correct answer

spectacle mounted bioptic position (top)

Correct Incorrect Correct answer

1 point(s)

The image from fixed focus stands is intended to be viewed from:

optical infinity

Correct Incorrect Correct answer

60 cm

Correct Incorrect Correct answer

40 cm

Correct Incorrect Correct answer

10 cm

Correct Incorrect Correct answer

1 point(s)

Which of the following is not an advantage of magnifying spectacles:

higher powers require closer reading distances

Correct Incorrect Correct answer

spectacles enable the patient to use both hands

Correct Incorrect Correct answer

people expect eyeglasses to help them

Correct Incorrect Correct answer

they can be used for prolonged reading tasks

Correct Incorrect Correct answer

1 point(s)

Which of the following is not an advantage of hand magnifiers:

they are a conventional and familiar aid

Correct Incorrect Correct answer

they are useful for short term tasks such as reading labels

Correct Incorrect Correct answer

they present a reduced visual field

Correct Incorrect Correct answer

eye-to-lens distance can be varied at will

Correct Incorrect Correct answer

1 point(s)

Which of the following is not an advantage of telescopic systems:

they are the only optical systems that provide magnification for distance

Correct Incorrect Correct answer

the working distance for intermediate and near telescopes can be adjusted

Correct Incorrect Correct answer

binocular correction is available in higher powers

Correct Incorrect Correct answer

extra training is often required

Correct Incorrect Correct answer

1 point(s)

Methods of achieving contrast enhancement might include:

high contrast reading material
contrasting colors indoors
a line guide to isolate reading material
good illumination

1 & 2

Correct Incorrect Correct answer

2 & 3

Correct Incorrect Correct answer

1, 2, & 3

Correct Incorrect Correct answer

1, 2, 3 & 4

Correct Incorrect Correct answer

Quiz For Introduction to Low Vision

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