ABO PRACTICAL BASED ON
THE ABO-NCLE PRACTICAL
EXAM QUESTIONS AND
ANSWERS (LATEST)
MRP - ANSWERS-Major Reference Point, same as optical center if
no prescribed prism. the MRP or prism reference point (PRP) is the
location on the lens that contains the prescribed refractive and prism
correction
minimum blank size - ANSWERS-smallest lens blank that can be
used for a prescription lens in specific frame. depends on ED of frame
Minimum Blank Size Formula - ANSWERS-M = ED + 2(d) + 2mm
where ED is effective diameter
d is the decentration per lens
2 is plus 2 mm for extra area
Bridge pressure - ANSWERS-90% of eyeglass weight
too small bridge will cause irritation on the sides of the nose
to large a bridge will put unnecessary pressure on the crest of the
patients nose
, ear pressure - ANSWERS-90% of adjustment to make it feel
comfortable
inverted triangle face shape - ANSWERS-consider getting frames
slightly wider than your forehead for balance. Glasses with detailing
on the lower portion of the frames are also a good option.
Oval face shape - ANSWERS-any dark or light colored frames that
are as wide as the broadest part of your face. Also, it is best to avoid
any oversized frames.
Round face shape - ANSWERS-stay away from rounded glasses and
short frames. Instead, look for frames that will give contrast to your
face such as square or angular shaped frames.
Square face shape - ANSWERS-dark colored frames and oval
eyeglasses to add contrast to your strong facial features. Consider
staying away from geometric and square shaped frames and avoid any
light colored frames.
rectangle face shape - ANSWERS-soften your angular lines with
rounder frames that are a little thinner. Also ensure the width of the
frames is a little wider than your cheekbones.
ANSI - ANSWERS-American National Standards Institute: A private,
non-profit organization that coordinates the development and use of
voluntary consensus standards in the United States.
THE ABO-NCLE PRACTICAL
EXAM QUESTIONS AND
ANSWERS (LATEST)
MRP - ANSWERS-Major Reference Point, same as optical center if
no prescribed prism. the MRP or prism reference point (PRP) is the
location on the lens that contains the prescribed refractive and prism
correction
minimum blank size - ANSWERS-smallest lens blank that can be
used for a prescription lens in specific frame. depends on ED of frame
Minimum Blank Size Formula - ANSWERS-M = ED + 2(d) + 2mm
where ED is effective diameter
d is the decentration per lens
2 is plus 2 mm for extra area
Bridge pressure - ANSWERS-90% of eyeglass weight
too small bridge will cause irritation on the sides of the nose
to large a bridge will put unnecessary pressure on the crest of the
patients nose
, ear pressure - ANSWERS-90% of adjustment to make it feel
comfortable
inverted triangle face shape - ANSWERS-consider getting frames
slightly wider than your forehead for balance. Glasses with detailing
on the lower portion of the frames are also a good option.
Oval face shape - ANSWERS-any dark or light colored frames that
are as wide as the broadest part of your face. Also, it is best to avoid
any oversized frames.
Round face shape - ANSWERS-stay away from rounded glasses and
short frames. Instead, look for frames that will give contrast to your
face such as square or angular shaped frames.
Square face shape - ANSWERS-dark colored frames and oval
eyeglasses to add contrast to your strong facial features. Consider
staying away from geometric and square shaped frames and avoid any
light colored frames.
rectangle face shape - ANSWERS-soften your angular lines with
rounder frames that are a little thinner. Also ensure the width of the
frames is a little wider than your cheekbones.
ANSI - ANSWERS-American National Standards Institute: A private,
non-profit organization that coordinates the development and use of
voluntary consensus standards in the United States.
