NCLE Test Questions and Verified Answers
Updated
Question 1
An aphakic patient with K readings of 40.50 @ 180/41.25 @ 90, large palpebral
fissures and flaccid lower lids is a good candidate for
a. a one cut
b. a myoflange lenticular
c. a hyperflange lenticular
d. a back toric
Correct Answer
b. a myoflange lenticular
Question 2
A soft lens has edge lift when observed on a cornea. How can this be corrected?
a. Steepen base curve
b. Decrease diameter
c. Flatten base curve
d. Change edge design
Correct Answer
a. Steepen base curve
Question 3
A lens fitted for keratoconus should:
a. Flatten the apex
b. Ride high
c. Align the apex
d. Ride low
Correct Answer
c. Align the apex
Page 1 of 379
,Question 4
Which of the following materials will not require a weekly enzymatic cleaner?
a. Polymethylmethacrylate lenses
b. Sofperm
c. Hydroxyethyl Methacrylate lenses
d. Silicone - acrylate lenses
Correct Answer
a. Polymethylmethacrylate lenses
Question 5
A rigid lens showing a band-shaped area of touch on the flattest meridian is an
indication of
a. steep fit
b. an alignment fit
c. a flat fit
d. an astigmatic fit
Correct Answer
a. steep fit
Question 6
Which of the following preservatives has a low incidence of ocular sensitivity with a
soft contact lenses?
a. Sorbic Acid
b. Chlorobutanol
c. Benzalkonium Chloride
d. Hydrogen Peroxide 3%
Correct Answer
a. Sorbic Acid
Page 2 of 379
,Question 7
A back toric soft lens works best with:
a. Residual astigmatism
b. High corneal toricity
c. Low corneal toricity
d. Spherical toricity
Correct Answer
b. High corneal toricity
Question 8
An instrument that allows simultaneous verification of lens diameter, optic zone
width, and peripheral curve width is:
a. measuring magnifier
b. ophthalmometer
c. profile analyzer
d. radiuscope
Correct Answer
a. measuring magnifier
(the book says d. radiuscope)
Question 9
Transient keratometric mier distortion is usually due to-
a. pre-ocular tear film abnormalities
b. prolonged rigid lens wear
c. prolonged soft lens wear
d. irregular corneal astigmatism
Correct Answer
a. pre-ocular tear film abnormalities
Page 3 of 379
, Question 10
Given the following information:
K's 45.00/44.00 @ 90
Rx -3.00 + 1.00 x 180
Which of the following set of lens specifications would most simulate an
intrapalpebral RGP fitting?
B.C Rx Dia.
a. 44.50 -2.50 8.5
b. 43.50 -1.50 8.5
c. 43.50 -1.50 9.5
d. 44.50 -2.50 9.5
Correct Answer
B.C Rx Dia.
a. 44.50 -2.50 8.5
Question 11
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
Question 12
The main focusing mechanism of the eye is the
a. Cornea
b. Crystalline Lens
c. Retina
d. Vitreous
Correct Answer
b. Crystalline Lens
Page 4 of 379
Updated
Question 1
An aphakic patient with K readings of 40.50 @ 180/41.25 @ 90, large palpebral
fissures and flaccid lower lids is a good candidate for
a. a one cut
b. a myoflange lenticular
c. a hyperflange lenticular
d. a back toric
Correct Answer
b. a myoflange lenticular
Question 2
A soft lens has edge lift when observed on a cornea. How can this be corrected?
a. Steepen base curve
b. Decrease diameter
c. Flatten base curve
d. Change edge design
Correct Answer
a. Steepen base curve
Question 3
A lens fitted for keratoconus should:
a. Flatten the apex
b. Ride high
c. Align the apex
d. Ride low
Correct Answer
c. Align the apex
Page 1 of 379
,Question 4
Which of the following materials will not require a weekly enzymatic cleaner?
a. Polymethylmethacrylate lenses
b. Sofperm
c. Hydroxyethyl Methacrylate lenses
d. Silicone - acrylate lenses
Correct Answer
a. Polymethylmethacrylate lenses
Question 5
A rigid lens showing a band-shaped area of touch on the flattest meridian is an
indication of
a. steep fit
b. an alignment fit
c. a flat fit
d. an astigmatic fit
Correct Answer
a. steep fit
Question 6
Which of the following preservatives has a low incidence of ocular sensitivity with a
soft contact lenses?
a. Sorbic Acid
b. Chlorobutanol
c. Benzalkonium Chloride
d. Hydrogen Peroxide 3%
Correct Answer
a. Sorbic Acid
Page 2 of 379
,Question 7
A back toric soft lens works best with:
a. Residual astigmatism
b. High corneal toricity
c. Low corneal toricity
d. Spherical toricity
Correct Answer
b. High corneal toricity
Question 8
An instrument that allows simultaneous verification of lens diameter, optic zone
width, and peripheral curve width is:
a. measuring magnifier
b. ophthalmometer
c. profile analyzer
d. radiuscope
Correct Answer
a. measuring magnifier
(the book says d. radiuscope)
Question 9
Transient keratometric mier distortion is usually due to-
a. pre-ocular tear film abnormalities
b. prolonged rigid lens wear
c. prolonged soft lens wear
d. irregular corneal astigmatism
Correct Answer
a. pre-ocular tear film abnormalities
Page 3 of 379
, Question 10
Given the following information:
K's 45.00/44.00 @ 90
Rx -3.00 + 1.00 x 180
Which of the following set of lens specifications would most simulate an
intrapalpebral RGP fitting?
B.C Rx Dia.
a. 44.50 -2.50 8.5
b. 43.50 -1.50 8.5
c. 43.50 -1.50 9.5
d. 44.50 -2.50 9.5
Correct Answer
B.C Rx Dia.
a. 44.50 -2.50 8.5
Question 11
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
Question 12
The main focusing mechanism of the eye is the
a. Cornea
b. Crystalline Lens
c. Retina
d. Vitreous
Correct Answer
b. Crystalline Lens
Page 4 of 379
