NCLE TEST QUESTIONS EXAM
2025 |GUARANTEED ACCURATE
ANSWERS |VERIFIED
Assessment of the quality of the peripheral curves (blends of a rigid
contact lens) is achieved by the use of the-
a. profile analyzer
b. shadow graph
c. keratometer
d. burton light - ACCURATE ANSWERS✔✔ a. profile analyzer
Contact lens power should be specified in-
a. back vertex power
b. sphero-cylinder power
c. power in situ
d. posterier apical radius - ACCURATE ANSWERS✔✔ a. back vertex
power
The slit-lamp illumination that gives an overall view of the cornea but
limits detail is-
a. sclerotic scatter
b. diffuse
,c. specular reflection
d. oscilatory - ACCURATE ANSWERS✔✔ b. diffuse
When a keratometric miers reflected off a soft contact lens are only clear
when the wearer blinks, the lens fit is too-
a. small
b. large
c. steep
d. flat - ACCURATE ANSWERS✔✔ c. steep
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 - ACCURATE ANSWERS✔✔ a. pre-
ocular tear film abnormalities
Epithelial edema which manifests itself clinically as central corneal
haze, is verified by the slit lamp using sclerotic scatter illumination.
What specific technique does the examiner use to see this condition?
a. the naked eye and an angle between the slit lamp beam and the eye of
90˚
b. the blue cobalt filter of the slit lamp and an angle of about 45˚
,c. the green filter of the slit lamp with high magnification
d. high magnification and an angle between the beam and scope of 180˚
- ACCURATE ANSWERS✔✔ a. the naked eye and an angle between
the slit lamp beam and the eye of 90˚
With a rigid contact lens in place a flourescein pattern shows a narrow
bend horizontally wih a concentration of flourescein inferiorly and
superiorly under the lens. Which one of the following type of
astigmatism is represented by this pattern?
a. lenticular astigmatism
b. residual astigmatism
c. against the rule astigmatism
d. with the rule astigmatism - ACCURATE ANSWERS✔✔ d. with the
rule astigmatism
Refractive Rx -3.00 -1.00 x 170
K's 42.00 @ 170/43.00 @ 80
Given the above Rx and K's he following diagnostic toric soft lens was
used:
B.C. 8.8
Power -3.00 -1.00 x 180
During dianostic evalutation, the above lens rotated 10 clockwise. The
lens ordered should have an axis of:
a. 10
, b. 180
c. 170
d. 160 - ACCURATE ANSWERS✔✔ b. 180
Given the same circumstances from the above question, once the
correctly ordered lens has been dispensed, the rotational marks should
settle at _______.
a. 6 o clock
b. 10 clockwise rotation
c. 10 counter clockwise rotation
d. none of the above - ACCURATE ANSWERS✔✔ b. 10 clockwise
rotation
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 - ACCURATE ANSWERS✔✔ a. measuring magnifier
(the book says d. radiuscope)
The instrument used for magnification of the edge of a rigid CL is a
_______.
2025 |GUARANTEED ACCURATE
ANSWERS |VERIFIED
Assessment of the quality of the peripheral curves (blends of a rigid
contact lens) is achieved by the use of the-
a. profile analyzer
b. shadow graph
c. keratometer
d. burton light - ACCURATE ANSWERS✔✔ a. profile analyzer
Contact lens power should be specified in-
a. back vertex power
b. sphero-cylinder power
c. power in situ
d. posterier apical radius - ACCURATE ANSWERS✔✔ a. back vertex
power
The slit-lamp illumination that gives an overall view of the cornea but
limits detail is-
a. sclerotic scatter
b. diffuse
,c. specular reflection
d. oscilatory - ACCURATE ANSWERS✔✔ b. diffuse
When a keratometric miers reflected off a soft contact lens are only clear
when the wearer blinks, the lens fit is too-
a. small
b. large
c. steep
d. flat - ACCURATE ANSWERS✔✔ c. steep
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 - ACCURATE ANSWERS✔✔ a. pre-
ocular tear film abnormalities
Epithelial edema which manifests itself clinically as central corneal
haze, is verified by the slit lamp using sclerotic scatter illumination.
What specific technique does the examiner use to see this condition?
a. the naked eye and an angle between the slit lamp beam and the eye of
90˚
b. the blue cobalt filter of the slit lamp and an angle of about 45˚
,c. the green filter of the slit lamp with high magnification
d. high magnification and an angle between the beam and scope of 180˚
- ACCURATE ANSWERS✔✔ a. the naked eye and an angle between
the slit lamp beam and the eye of 90˚
With a rigid contact lens in place a flourescein pattern shows a narrow
bend horizontally wih a concentration of flourescein inferiorly and
superiorly under the lens. Which one of the following type of
astigmatism is represented by this pattern?
a. lenticular astigmatism
b. residual astigmatism
c. against the rule astigmatism
d. with the rule astigmatism - ACCURATE ANSWERS✔✔ d. with the
rule astigmatism
Refractive Rx -3.00 -1.00 x 170
K's 42.00 @ 170/43.00 @ 80
Given the above Rx and K's he following diagnostic toric soft lens was
used:
B.C. 8.8
Power -3.00 -1.00 x 180
During dianostic evalutation, the above lens rotated 10 clockwise. The
lens ordered should have an axis of:
a. 10
, b. 180
c. 170
d. 160 - ACCURATE ANSWERS✔✔ b. 180
Given the same circumstances from the above question, once the
correctly ordered lens has been dispensed, the rotational marks should
settle at _______.
a. 6 o clock
b. 10 clockwise rotation
c. 10 counter clockwise rotation
d. none of the above - ACCURATE ANSWERS✔✔ b. 10 clockwise
rotation
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 - ACCURATE ANSWERS✔✔ a. measuring magnifier
(the book says d. radiuscope)
The instrument used for magnification of the edge of a rigid CL is a
_______.
