NCLE Test Questions With Correct Answers

NCLE Test Questions With Correct
Answers
Assessment of the quality of the peripheral curves (blends of a rigid contact lens)
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is achieved by the use of the-
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a. profile analyzer
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b. shadow graph
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c. keratometer
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d. burton light - CORRECT ANSWER✔✔-a. profile analyzer
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Contact lens power should be specified in-
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a. back vertex power
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b. sphero-cylinder power
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c. power in situ
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d. posterier apical radius - CORRECT ANSWER✔✔-a. back vertex power
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The slit-lamp illumination that gives an overall view of the cornea but limits detail
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is-
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a. sclerotic scatter
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b. diffuse
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c. specular reflection
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d. oscilatory - CORRECT ANSWER✔✔-b. diffuse
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,When a keratometric miers reflected off a soft contact lens are only clear when
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the wearer blinks, the lens fit is too-
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a. small
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b. large
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c. steep
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d. flat - CORRECT ANSWER✔✔-c. steep
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Transient keratometric mier distortion is usually due to-
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a. pre-ocular tear film abnormalities
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b. prolonged rigid lens wear
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c. prolonged soft lens wear
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d. irregular corneal astigmatism - CORRECT ANSWER✔✔-a. pre-ocular tear film
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abnormalities


Epithelial edema which manifests itself clinically as central corneal haze, is
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verified by the slit lamp using sclerotic scatter illumination. What specific
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technique does the examiner use to see this condition?
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a. the naked eye and an angle between the slit lamp beam and the eye of 90˚
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b. the blue cobalt filter of the slit lamp and an angle of about 45˚
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c. the green filter of the slit lamp with high magnification
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d. high magnification and an angle between the beam and scope of 180˚ -
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CORRECT ANSWER✔✔-a. the naked eye and an angle between the slit lamp
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beam and the eye of 90˚
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,With a rigid contact lens in place a flourescein pattern shows a narrow bend
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horizontally wih a concentration of flourescein inferiorly and superiorly under the
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lens. Which one of the following type of astigmatism is represented by this
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pattern?
a. lenticular astigmatism
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b. residual astigmatism
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c. against the rule astigmatism
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d. with the rule astigmatism - CORRECT ANSWER✔✔-d. with the rule astigmatism
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Refractive Rx -3.00 -1.00 x 170 | | | | |




K's 42.00 @ 170/43.00 @ 80
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Given the above Rx and K's he following diagnostic toric soft lens was used:
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B.C. 8.8 |




Power -3.00 -1.00 x 180 | | | |




During dianostic evalutation, the above lens rotated 10 clockwise. The lens
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ordered should have an axis of: | | | | |




a. 10
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b. 180
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c. 170
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d. 160 - CORRECT ANSWER✔✔-b. 180
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Given the same circumstances from the above question, once the correctly
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ordered lens has been dispensed, the rotational marks should settle at _______.
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a. 6 o clock
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b. 10 clockwise rotation
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, c. 10 counter clockwise rotation
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d. none of the above - CORRECT ANSWER✔✔-b. 10 clockwise rotation
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An instrument that allows simultaneous verification of lens diameter, optic zone
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width, and peripheral curve width is:
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a. measuring magnifier
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b. ophthalmometer
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c. profile analyzer
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d. radiuscope - CORRECT ANSWER✔✔-a. measuring magnifier
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(the book says d. radiuscope)
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The instrument used for magnification of the edge of a rigid CL is a _______.
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a. radiuscope
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b. shadowgraph
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c. profile analysis
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d. keratometer - CORRECT ANSWER✔✔-b. shadowgraph
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Mary is wearing in her right eye RGP lens with a base curve of 43.50 and a power
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of +2.75. The doctor refracts -0.75 sphere over this lens. If you wish to order her
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a new lens with a curve of 43.00, what will the new power be?
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a. +1.50
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b. +2.00
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c. +2.50
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d. +3.00 - CORRECT ANSWER✔✔-c. +250
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