Quiz For Contact Lens Complications

1 point(s)

Contact lens complications ___________________

never need to be considered

Correct Incorrect Correct answer

are always very mild

Correct Incorrect Correct answer

can be severe and sight threatening

Correct Incorrect Correct answer

none of the above

Correct Incorrect Correct answer

1 point(s)

___________________________ is an inflammation of the tarsal conjunctiva.

Giant papillary conjunctivitis

Correct Incorrect Correct answer

Dellen

Correct Incorrect Correct answer

Corneal hypoxia

Correct Incorrect Correct answer

Neovascularization

Correct Incorrect Correct answer

1 point(s)

Symptoms of GPC can include:

red, itchy, irritated eyes

Correct Incorrect Correct answer

blurr vision while wearing contact lenses

Correct Incorrect Correct answer

increased lens movement with each blink

Correct Incorrect Correct answer

all of the above

Correct Incorrect Correct answer

1 point(s)

Contact lens solutions that contain a preservative called ________________ have been found to trigger GPC in some patients.

lysozyme

Correct Incorrect Correct answer

Enzyme

Correct Incorrect Correct answer

Mucoid

Correct Incorrect Correct answer

Thimerosal

Correct Incorrect Correct answer

1 point(s)

The tear layer contains __________________ which help guard against infection.

proteins

Correct Incorrect Correct answer

thimerosal

Correct Incorrect Correct answer

epithelial erosions

Correct Incorrect Correct answer

GPC

Correct Incorrect Correct answer

1 point(s)

The ______________________ provides a smooth and transparent refractive surface.

cornea

Correct Incorrect Correct answer

endothelium

Correct Incorrect Correct answer

tear film

Correct Incorrect Correct answer

stroma

Correct Incorrect Correct answer

1 point(s)

The ______________________ is a foreign body that rubs across and is presses against the epithelium with each blink.

stroma

Correct Incorrect Correct answer

limbal area

Correct Incorrect Correct answer

conjunctiva

Correct Incorrect Correct answer

contact lens

Correct Incorrect Correct answer

1 point(s)

Mechanical epithelial defects can be caused by:

poorly executed insertion/removal techniques

Correct Incorrect Correct answer

debris trapped under the contact lens

Correct Incorrect Correct answer

a chip or tear in the edge of a contact lens

Correct Incorrect Correct answer

all of the above

Correct Incorrect Correct answer

1 point(s)

____________________ can allow bacteria to penetrate the cornea resulting in a stromal infection.

Epilthelial defects

Correct Incorrect Correct answer

GPC

Correct Incorrect Correct answer

Thimerisol

Correct Incorrect Correct answer

A warped contact lens

Correct Incorrect Correct answer

1 point(s)

The most common staining pattern occurs:

in the palperbal fissure between the lens and the limbus in the 3 and 9’ o clock positions

Correct Incorrect Correct answer

the limbal peripheral area

Correct Incorrect Correct answer

in the tarsal conjunctiva

Correct Incorrect Correct answer

in the endothelial reflex

Correct Incorrect Correct answer

1 point(s)

Manipulation of a contact lens during insertion and removal can:

traumatize the epithelium creating painful abrasions of various shapes and sizes

Correct Incorrect Correct answer

result in punctate epithelial erosions

Correct Incorrect Correct answer

trigger the formation of GPC

Correct Incorrect Correct answer

cause corneal warpage

Correct Incorrect Correct answer

1 point(s)

Punctate epithelial erosions occur commonly with contact lens wear and can be caused by:

a lens that is too flat for the cornea

Correct Incorrect Correct answer

a lens that is too steep for the cornea

Correct Incorrect Correct answer

a poorly moving lens or one with a large optical zone

Correct Incorrect Correct answer

all of the above

Correct Incorrect Correct answer

1 point(s)

Corneal staining may be caused by:

poor edge design
poor insertion techniques
a foreign body

1 only

Correct Incorrect Correct answer

3 only

Correct Incorrect Correct answer

1 & 2 only

Correct Incorrect Correct answer

all of the above

Correct Incorrect Correct answer

1 point(s)

Contact lens induced corneal vascularization can be caused by:

recurring epithelial defects
recurring an persistent epithelial hypoxia
irregular astigmatism
mixed astigmatism

1 & 2

Correct Incorrect Correct answer

1, 2, & 3

Correct Incorrect Correct answer

2 & 4

Correct Incorrect Correct answer

3 & 4

Correct Incorrect Correct answer

1 point(s)

A foreign body can appear as a:

snake-like track on the cornea
small crater-like lesion
crescent shaped arc stain
swirl-like stain

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)

Which of the following is most likely to be the cause of corneal vascularization?

bandage lens

Correct Incorrect Correct answer

rigid lens

Correct Incorrect Correct answer

soft lens

Correct Incorrect Correct answer

gas permeable lens

Correct Incorrect Correct answer

1 point(s)

Three and nine o’ clock staining is generally seen with:

bandage lens

Correct Incorrect Correct answer

rigid lens

Correct Incorrect Correct answer

soft lens

Correct Incorrect Correct answer

gas permeable lens

Correct Incorrect Correct answer

1 point(s)

The invasion of new blood vessels into the cornea is known as:

bullous keratopathy

Correct Incorrect Correct answer

corneal vascularization

Correct Incorrect Correct answer

keratitis sicca

Correct Incorrect Correct answer

deturgence

Correct Incorrect Correct answer

1 point(s)

Punctate staining can occur with soft lenses and is usually caused by:

excessive dessication

Correct Incorrect Correct answer

neovascularization

Correct Incorrect Correct answer

GPC

Correct Incorrect Correct answer

irregular astigmatism

Correct Incorrect Correct answer

1 point(s)

Chemical epithelial defects can be caused by:

surfactant cleaning solutions

Correct Incorrect Correct answer

hydrogen peroxide

Correct Incorrect Correct answer

enzyme

Correct Incorrect Correct answer

all of the above

Correct Incorrect Correct answer

1 point(s)

Contact Lenses:

increase the amount of oxygen available to the cornea

Correct Incorrect Correct answer

decrease the amount of oxygen available to the cornea

Correct Incorrect Correct answer

have no effect on the amount of oxygen available to the cornea

Correct Incorrect Correct answer

should never be worn while sleeping

Correct Incorrect Correct answer

1 point(s)

Hypoxia produces:

epithelian edema

Correct Incorrect Correct answer

blurred vision

Correct Incorrect Correct answer

epithelial cell death

Correct Incorrect Correct answer

all of the above

Correct Incorrect Correct answer

1 point(s)

Which of the following is not caused by chronic epithelial hypoxia?

epithelial microcysts

Correct Incorrect Correct answer

superficial neovascularization

Correct Incorrect Correct answer

3 and 9’o clock staining

Correct Incorrect Correct answer

decreased corneal sensitivity

Correct Incorrect Correct answer

1 point(s)

All of the following can contribute to the development of contact lens associated corneal infections except:

breaks in the corneal epithelium

Correct Incorrect Correct answer

reduced corneal sensitivity

Correct Incorrect Correct answer

aphakic extended wear lenses

Correct Incorrect Correct answer

GPC

Correct Incorrect Correct answer

1 point(s)

The primary risk factor for developing contact lens related keratitis is:

sleeping with the lenses on

Correct Incorrect Correct answer

3 and 9 ‘o clock staining

Correct Incorrect Correct answer

protein build up

Correct Incorrect Correct answer

bitoric lenses

Correct Incorrect Correct answer

1 point(s)

The greatest source of infection for contact lens wearers from Acanthamoeba

sterile saline solution

Correct Incorrect Correct answer

enzymatic cleaner

Correct Incorrect Correct answer

tap water

Correct Incorrect Correct answer

saliva

Correct Incorrect Correct answer

1 point(s)

Corneal warpage typically produces

irregular astigmatism

Correct Incorrect Correct answer

against the rule astigmatism

Correct Incorrect Correct answer

hyperphoria

Correct Incorrect Correct answer

presbyopia

Correct Incorrect Correct answer

1 point(s)

Which of the following is not true

all eyes are altered by contact lens wear

Correct Incorrect Correct answer

contact lenses retard the progression of myopia in adolescents

Correct Incorrect Correct answer

contact lens wear can produce abnormalities of the lids, conjunctiva, epithelium, stroma, & endothelium.

Correct Incorrect Correct answer

contact lens complications can be sight threatening

Correct Incorrect Correct answer

1 point(s)

When a contact lens adheres tightly to the eye and results in pain, photophobia and injection, it is called:

corneal warpage

Correct Incorrect Correct answer

loose lens syndrome

Correct Incorrect Correct answer

tight lens syndrome

Correct Incorrect Correct answer

keratoconus

Correct Incorrect Correct answer

1 point(s)

One of the signs of chronic corneal hypoxia is:

superficial neovascularization

Correct Incorrect Correct answer

lens warpage

Correct Incorrect Correct answer

dellen

Correct Incorrect Correct answer

against the rule astigmatism

Correct Incorrect Correct answer

1 point(s)

Which of these is a non-adaptive symptom for a new contact lens patient

lens awareness

Correct Incorrect Correct answer

pain

Correct Incorrect Correct answer

temporary reduced blink rate

Correct Incorrect Correct answer

tearing

Correct Incorrect Correct answer

1 point(s)

What is blepharoptosis

the upper eyelid sags

Correct Incorrect Correct answer

an inflammation of the cornea

Correct Incorrect Correct answer

missing eyelashes

Correct Incorrect Correct answer

swelling of the eyelid margins

Correct Incorrect Correct answer

1 point(s)

Your patient has an external hordoleum. What is the correct course of action
1. discontinue contact lens use
2. change to daily disposable contact lenses
3. refer the patient to the original practitioner
4. recommend eye drops

1 only

Correct Incorrect Correct answer

1 and 2

Correct Incorrect Correct answer

1 and 3 only

Correct Incorrect Correct answer

1, 2, and 4

Correct Incorrect Correct answer

1 point(s)

SEAL is an acronym for what condition

sub epithelial alternating lesion

Correct Incorrect Correct answer

superior epithelial arcuate lesion

Correct Incorrect Correct answer

self eroding arcuate line

Correct Incorrect Correct answer

soft extended alternating lens

Correct Incorrect Correct answer

1 point(s)

What defect of the cornea can be revealed by the sclerotic scatter view with the slit lamp

a lesion

Correct Incorrect Correct answer

punctate keratitis

Correct Incorrect Correct answer

a foreign body injury

Correct Incorrect Correct answer

central gross edema

Correct Incorrect Correct answer

1 point(s)

Polymegathism is a variation in the size of endothelial cells. Which type of lenses are most commonly associated with this condition

high water soft lenses

Correct Incorrect Correct answer

PMMA lenses

Correct Incorrect Correct answer

silicone hydrogel lenses

Correct Incorrect Correct answer

RGP lenses

Correct Incorrect Correct answer

1 point(s)

What is the tonicity of the natural tear

21%

Correct Incorrect Correct answer

7%

Correct Incorrect Correct answer

1.0%

Correct Incorrect Correct answer

0.9%

Correct Incorrect Correct answer

1 point(s)

After enzyme cleaning, a lens is still coated with a layer or denatured proteins and lipids. What is the correct course of action

send the lens out for professional cleaning

Correct Incorrect Correct answer

discard the lens and replace it with a new lens of the same design

Correct Incorrect Correct answer

have the patient clean it and use enzyme 5 times that day

Correct Incorrect Correct answer

choose a brand new lens design and material

Correct Incorrect Correct answer

1 point(s)

A long time patient has suddenly become very sensitive to light. What should he or she do

use eye drops

Correct Incorrect Correct answer

go to the emergency room

Correct Incorrect Correct answer

report this condition immediately to the contact lens fitter

Correct Incorrect Correct answer

do nothing, it will go away naturally

Correct Incorrect Correct answer

1 point(s)

Your patient has bilateral superior flattening of the cornea and a retinoscope test shows “scissors-reflex.” What is the most likely problem

a tight lens

Correct Incorrect Correct answer

corneal erosion

Correct Incorrect Correct answer

punctate keratitis

Correct Incorrect Correct answer

corneal warpage

Correct Incorrect Correct answer

Quiz For Contact Lens Complications

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