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ABO-NCLE Exam Questions With Complete Solutions
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ABO-NCLE Exam Questions With Complete Solutions
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ABO-NCLE Exam Questions With Complete Solutions337.50 Correct Answer The number to remember when
converting diopters to millimeters
A lens that is convex on one side and flat on the other Correct
Answer plano-convex
a meniscus lens that thinner in the center than in the periphery
Correct Answer minus meniscus lens
abbe value Correct Answer the amount of chromatic abberation
produced by a lens material
abbe value for glass Correct Answer 58
abbe value for plastic Correct Answer 1.74= 32 abbe
1.7= 36 abbe
1.67= 32
1.6= 42 abbe
abbe value for polycarbonate Correct Answer 30
abbe value for standard plastic Correct Answer 58
abbe value for trivex Correct Answer 45
adjust beam Correct Answer used to adjust the width and or
height of the beam
,adnexa Correct Answer the ocular adnexa includes the
conjuctiva, the periorbital area including the eyelids and the
orbit
amblyopia Correct Answer eyes cant work together, lazy eye
occurs
an abbe value is a measure of Correct Answer chromatic
aberration
Anisometropia Correct Answer the eyes have different
refractive powers
ANSI Correct Answer the association that sets standards for
eye protection
anterior chamber Correct Answer the space between the back
of the cornea and the front surface of the iris
apex Correct Answer the tip of a triangle when drawing the
prisms of plus and minus lenses
aspheric lens Correct Answer Minimizes spherical aberrations
astigmatism Correct Answer corneal surface is not round. it is
more curved in one direction than in the direction perpendicular
to it
ASTM Correct Answer the associtaion that sets rules for the
safety testing of eyewear materials
, blocking Correct Answer correctly positioning a lens so it can
be cut to fit a frame
blue blocking lenses Correct Answer help reduce melatonin
blocked by digital devices
bridge Correct Answer the portion of the frame between the
lenses that sits over the nose
bridge size range (in mm) Correct Answer 13-16 mm
chromatic abberation Correct Answer caused by the refraction
of different wavelengths and results in colored fringes around
images
chromatic aberration Correct Answer when the lens does not
focus all the wavelengths of color to one point
cintacts lenses are usually fit to this curvature of the cornea
Correct Answer flattest
circumference gauge Correct Answer a measuring tape that fits
snugly around the lens perimeter and is measured in millimeters
cobalt filter knob Correct Answer this knob flips on the cobalt
filter in front of the lamp so when fluorescein dye is used on the
cornea, it absorbs the blue light and highlights damaged corneal
tissue. just above this is a knob to flip the cobalt filter in front of
the beam. this knob also enables you to flip in a filter to dim the
intensity of the lamp and adjust the size of the circular light
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