NCLE Advanced Exam Questions (285) with 100% Correct Answers
Which of the following medications may affect successful contact lens wear?
a. antacids
b. antihistamines
c. aspirin
d. laxatives Correct Answer: antihistamines
Which term refers to a sensitivity to light
A.presbyopia
B.Photophobia
C.Pannus
D. Ptosis Correct Answer: Photophobia
The following is an example of what type of astigmatism?
K's 42.50 @180 /40.50 @90
A. with the rule
B. Lenticular astigmatism
C.Against the rule
D. Irregular astigmatism Correct Answer: Against the rule astigmatism
The cornea receives nutrients from
1 Aqueous humor
2 Tears
3 Limbal blood vessels
4 Orbicularis occuli
a. 1, 3 & 4
b. 2 & 3
c. 1, 2 & 3
d. 3 & 4 Correct Answer: aqueous humor, tears and limbal blood vessels
The increased loss of ability of the crystalline lens to accommodate is called? Correct Answer:
presbyopia
Which instrument can provide simultaneous information about the cornea, lids, conjunctivitis,
lashes, contact lens surface and fit?
A. Radius scope
B. Corneascope
C. Slitlamp
D. Keratometer Correct Answer: Slit lamp
The classic model of the pre-corneal tear film is composed of three layers what are they? Correct
Answer: Lipids aqueous mucin
,The average ph value of the human tear is
a. 6.6
b. 7.4
c. 7.8
d. 10.0 Correct Answer: B. 7.4
If the manufacturers guidelines suggest a minimum of four hours for this disinfection, what
would you suggest to the patient
A.Never leave lenses in disinfectant overnight
B.2 to 3 hours is probably enough
C.Use surfactant cleaner and preserved saline
D. A minimum of four hours is required Correct Answer: A minimum of four hours is required
The main supply of oxygen to the corneal epithelium is derived from the
A.Stroma
B.Collagen fibrils
C.Basal membrane
D.Tear film Correct Answer: Tear film
What is the term for the condition in which there is loss of vision without any apparent disease to
the eye? Correct Answer: amblyopia
Which auxiliary lens will extend the keratometer range to approximately 30.00D? Correct
Answer: -1.00
Which step should be performed first when taking keratometer measurements? Correct Answer:
Focus the eyepiece
The following is an example of what type of astigmatism
K's 44.00 @180/ 44.50 @90
RX -3.00 -2.50 X 180 Correct Answer: Lenticular astigmatism
Ocular signs of aging include
A. Tear film abnormalities
B.Reduced lid elasticity
C.Lens opacities
D.Loss of accommodation Correct Answer: Tear film abnormalities
Reduced lid elasticity
Lens opacities
Loss of accommodation
The pre-corneal tear film provides: Correct Answer: A smooth optical surface, metabolic
nutrients to the epithelium
What are the layers of the cornea? Correct Answer: Epithelium, bowmans layer, stroma,
Descemet's membrane, endothelium
, The normal cornea is transparent due to the pump action creating proper fluid balance. Which
layer of the cornea is most responsible for maintaining this function? Correct Answer:
endothelium
A normal tear break-up time is: Correct Answer: 10-12 seconds
A whitish haze in the peripheral corneal stroma which does not stain and is often seen in the
elderly is known as? Correct Answer: Arcus senilus
Patients with keratitis sicca are more prone to? Correct Answer: Secondary infections
Upon removal of the crystalline lens the patient is? Correct Answer: Aphakic
The following are RX represents
OD+2.00= 20/20
OS-3.00-2.00X180=20/20 Correct Answer: Anisometropia
This patient
OD+2.00= 20/20
OS-3.00-2.00X180=20/20
will best achieve stereopsis with which of the following modalities?
A. Contact lenses
B.Spectacles
C. IOL
D.Bifocals Correct Answer: Contact lenses
Tom spectacles with the power of -12.00+0.50X 90, 10 mm in front of his cornea. The likely soft
contact lens prescription for Tom would be Correct Answer: A -10. 50 dpt
The keratometer is an instrument used to measure? Correct Answer: corneal curvature
The average lifespan of a corneal epithelium cell from mitosis through maturation and
desquamation most nearly approximates Correct Answer: One Week
Which auxiliary a trial lens will extend the keratometer range to approximately 61.00D? Correct
Answer: +1.25 D
Wearing lenses in high altitudes and dry environments may result in complaints of all but the
following?
A.Photophobia
B. Chalazion
C.Grittiness
D.Burning sensation Correct Answer: Chalazion
Which of the following medications may affect successful contact lens wear?
a. antacids
b. antihistamines
c. aspirin
d. laxatives Correct Answer: antihistamines
Which term refers to a sensitivity to light
A.presbyopia
B.Photophobia
C.Pannus
D. Ptosis Correct Answer: Photophobia
The following is an example of what type of astigmatism?
K's 42.50 @180 /40.50 @90
A. with the rule
B. Lenticular astigmatism
C.Against the rule
D. Irregular astigmatism Correct Answer: Against the rule astigmatism
The cornea receives nutrients from
1 Aqueous humor
2 Tears
3 Limbal blood vessels
4 Orbicularis occuli
a. 1, 3 & 4
b. 2 & 3
c. 1, 2 & 3
d. 3 & 4 Correct Answer: aqueous humor, tears and limbal blood vessels
The increased loss of ability of the crystalline lens to accommodate is called? Correct Answer:
presbyopia
Which instrument can provide simultaneous information about the cornea, lids, conjunctivitis,
lashes, contact lens surface and fit?
A. Radius scope
B. Corneascope
C. Slitlamp
D. Keratometer Correct Answer: Slit lamp
The classic model of the pre-corneal tear film is composed of three layers what are they? Correct
Answer: Lipids aqueous mucin
,The average ph value of the human tear is
a. 6.6
b. 7.4
c. 7.8
d. 10.0 Correct Answer: B. 7.4
If the manufacturers guidelines suggest a minimum of four hours for this disinfection, what
would you suggest to the patient
A.Never leave lenses in disinfectant overnight
B.2 to 3 hours is probably enough
C.Use surfactant cleaner and preserved saline
D. A minimum of four hours is required Correct Answer: A minimum of four hours is required
The main supply of oxygen to the corneal epithelium is derived from the
A.Stroma
B.Collagen fibrils
C.Basal membrane
D.Tear film Correct Answer: Tear film
What is the term for the condition in which there is loss of vision without any apparent disease to
the eye? Correct Answer: amblyopia
Which auxiliary lens will extend the keratometer range to approximately 30.00D? Correct
Answer: -1.00
Which step should be performed first when taking keratometer measurements? Correct Answer:
Focus the eyepiece
The following is an example of what type of astigmatism
K's 44.00 @180/ 44.50 @90
RX -3.00 -2.50 X 180 Correct Answer: Lenticular astigmatism
Ocular signs of aging include
A. Tear film abnormalities
B.Reduced lid elasticity
C.Lens opacities
D.Loss of accommodation Correct Answer: Tear film abnormalities
Reduced lid elasticity
Lens opacities
Loss of accommodation
The pre-corneal tear film provides: Correct Answer: A smooth optical surface, metabolic
nutrients to the epithelium
What are the layers of the cornea? Correct Answer: Epithelium, bowmans layer, stroma,
Descemet's membrane, endothelium
, The normal cornea is transparent due to the pump action creating proper fluid balance. Which
layer of the cornea is most responsible for maintaining this function? Correct Answer:
endothelium
A normal tear break-up time is: Correct Answer: 10-12 seconds
A whitish haze in the peripheral corneal stroma which does not stain and is often seen in the
elderly is known as? Correct Answer: Arcus senilus
Patients with keratitis sicca are more prone to? Correct Answer: Secondary infections
Upon removal of the crystalline lens the patient is? Correct Answer: Aphakic
The following are RX represents
OD+2.00= 20/20
OS-3.00-2.00X180=20/20 Correct Answer: Anisometropia
This patient
OD+2.00= 20/20
OS-3.00-2.00X180=20/20
will best achieve stereopsis with which of the following modalities?
A. Contact lenses
B.Spectacles
C. IOL
D.Bifocals Correct Answer: Contact lenses
Tom spectacles with the power of -12.00+0.50X 90, 10 mm in front of his cornea. The likely soft
contact lens prescription for Tom would be Correct Answer: A -10. 50 dpt
The keratometer is an instrument used to measure? Correct Answer: corneal curvature
The average lifespan of a corneal epithelium cell from mitosis through maturation and
desquamation most nearly approximates Correct Answer: One Week
Which auxiliary a trial lens will extend the keratometer range to approximately 61.00D? Correct
Answer: +1.25 D
Wearing lenses in high altitudes and dry environments may result in complaints of all but the
following?
A.Photophobia
B. Chalazion
C.Grittiness
D.Burning sensation Correct Answer: Chalazion
