NCLE Test Questions With Complete Solutions
(NUMBER 22)
Given the following information:
K's 45.00 @ 180/42.00 @ 90
Rx -2.00 -4.25 x 90
Which of the following RGP lens designs would best correct this
wearers vision?
a. 45.00 -2.00
b. 42.00 -2.00 -4.25 x 90 prism ballasted
c. 42.00 -2.00
d. 42.00/45.00 -2.00 Correct Answer d. 42.00/45.00 -2.00
A _________ lens is a translating bifocal:
a. concentric
b. aspheric
c. deffractive
d. segmented Correct Answer d. segmented
A ________auxiliary trial lens will extend the keratometer to
61.00 D.
a. -1.25
b. +1.25
c. -1.50
d. +1.50 Correct Answer b. +1.25
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
A bifocal lens in which the power changes from the central area
of the lens to the periphery is known as
a. an aspherical lens
b. a tangent streak lens
c. a monocentric lens
d. a crescent lens Correct Answer a. an aspherical lens
A dense white appearance of the entire peripheral circumference
of the cornea which does not stain and is often seen in the
elderly is known as:
a. neovascularization
b. Dellen
c. Arcus senilus
d. Corneal ulcer Correct Answer c. Arcus senilus
A good example of a bifocal contact lens which may rotate
without vision imparement is:
a. aspheric
b. executive
c. fused crescent
d. tangent streak Correct Answer d. tangent streak
a hardening of the crystalline lens causing loss of
accommodation is known as:
a. presbyopia
b. myopia
, c. hyperopia
d. aphakia Correct Answer a. presbyopia
A high degree of with the rule astigmatism fitted with a rigid
spherical lens will show touch
a. on the horizontal meridian
b. on the vertical meridian
c. on the oblique meridian
d. on the residual meridian Correct Answer a. on the
horizontal meridian
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
A low riding high plus on a 40.00/40.75 cornea could be
corrected with
a. a myoflange
b. a hyperflange
c. a one cut
d. a panafocal Correct Answer a. a myoflange
A non-wetting RGP lens may cause:
a. hazy, filmy vision
b. lens awareness
(NUMBER 22)
Given the following information:
K's 45.00 @ 180/42.00 @ 90
Rx -2.00 -4.25 x 90
Which of the following RGP lens designs would best correct this
wearers vision?
a. 45.00 -2.00
b. 42.00 -2.00 -4.25 x 90 prism ballasted
c. 42.00 -2.00
d. 42.00/45.00 -2.00 Correct Answer d. 42.00/45.00 -2.00
A _________ lens is a translating bifocal:
a. concentric
b. aspheric
c. deffractive
d. segmented Correct Answer d. segmented
A ________auxiliary trial lens will extend the keratometer to
61.00 D.
a. -1.25
b. +1.25
c. -1.50
d. +1.50 Correct Answer b. +1.25
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
A bifocal lens in which the power changes from the central area
of the lens to the periphery is known as
a. an aspherical lens
b. a tangent streak lens
c. a monocentric lens
d. a crescent lens Correct Answer a. an aspherical lens
A dense white appearance of the entire peripheral circumference
of the cornea which does not stain and is often seen in the
elderly is known as:
a. neovascularization
b. Dellen
c. Arcus senilus
d. Corneal ulcer Correct Answer c. Arcus senilus
A good example of a bifocal contact lens which may rotate
without vision imparement is:
a. aspheric
b. executive
c. fused crescent
d. tangent streak Correct Answer d. tangent streak
a hardening of the crystalline lens causing loss of
accommodation is known as:
a. presbyopia
b. myopia
, c. hyperopia
d. aphakia Correct Answer a. presbyopia
A high degree of with the rule astigmatism fitted with a rigid
spherical lens will show touch
a. on the horizontal meridian
b. on the vertical meridian
c. on the oblique meridian
d. on the residual meridian Correct Answer a. on the
horizontal meridian
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
A low riding high plus on a 40.00/40.75 cornea could be
corrected with
a. a myoflange
b. a hyperflange
c. a one cut
d. a panafocal Correct Answer a. a myoflange
A non-wetting RGP lens may cause:
a. hazy, filmy vision
b. lens awareness
