Which of the following medications may affect successful contact lens wear?
a. antacids
b. antihistamines
c. aspirin
d. laxatives - Answer antihistamines
Which term refers to a sensitivity to light
A.presbyopia
B.Photophobia
C.Pannus
D. Ptosis - Answer Photophobia
The following is an...
Ncle Advanced Exam Questions And
Answers
Which of the following medications may affect successful contact lens wear?
a. antacids
b. antihistamines
c. aspirin
d. laxatives - Answer antihistamines
Which term refers to a sensitivity to light
A.presbyopia
B.Photophobia
C.Pannus
D. Ptosis - 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 - Answer Against the rule astigmatism
a. 1, 3 & 4
b. 2 & 3
c. 1, 2 & 3
d. 3 & 4 - Answer aqueous humor, tears and limbal blood vessels
The increased loss of ability of the crystalline lens to accommodate is called? -
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 - Answer Slit lamp
The classic model of the pre-corneal tear film is composed of three layers what are
they? - Answer Lipids aqueous mucin
The average ph value of the human tear is
a. 6.6
b. 7.4
c. 7.8
,Ncle Advanced Exam Questions And
Answers
d. 10.0 - 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 - 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 - Answer Tear film
What is the term for the condition in which there is loss of vision without any
apparent disease to the eye? - Answer amblyopia
Which auxiliary lens will extend the keratometer range to approximately 30.00D? -
Answer -1.00
Which step should be performed first when taking keratometer measurements? -
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 - Answer Lenticular astigmatism
Ocular signs of aging include
A. Tear film abnormalities
B.Reduced lid elasticity
C.Lens opacities
D.Loss of accommodation - Answer Tear film abnormalities
Reduced lid elasticity
Lens opacities
Loss of accommodation
The pre-corneal tear film provides: - Answer A smooth optical surface, metabolic
nutrients to the epithelium
What are the layers of the cornea? - 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?
- Answer endothelium
A normal tear break-up time is: - Answer 10-12 seconds
, Ncle Advanced Exam Questions And
Answers
A whitish haze in the peripheral corneal stroma which does not stain and is often
seen in the elderly is known as? - Answer Arcus senilus
Patients with keratitis sicca are more prone to? - Answer Secondary infections
Upon removal of the crystalline lens the patient is? - Answer Aphakic
The following are RX represents
OD+2.00= 20/20
OS-3.00-2.00X180=20/20 - 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 - 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 - Answer A -10. 50 dpt
The keratometer is an instrument used to measure? - Answer corneal curvature
The average lifespan of a corneal epithelium cell from mitosis through maturation
and desquamation most nearly approximates - Answer One Week
Which auxiliary a trial lens will extend the keratometer range to approximately
61.00D? - 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 - Answer Chalazion
The first line of defense in the protective system of the eye is formed by the? -
Answer Eyelids
Transient keratometric mire distortion is usually due to: - Answer Pre - ocular tear
film
In against the rules astigmatism the steepest corneal meridian is in - Answer Is at or
near 180°
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