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NCLE REVIEW NAO EXAM 2024/2025 QUESTIONS WITH VERIFIED & COMPLETED SOLUTIONS.
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NCLE REVIEW NAO EXAM 2024/2025 QUESTIONS WITH VERIFIED & COMPLETED SOLUTIONS.
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NCLE REVIEW NAOBiggest disadvantage of PMMA material is its lack of - ANS Gas permeability
Layer that makes up 10% of the cornea - ANS Epithelium
Vertical measurement for palpebral fissure - ANS 15mm
Eyelid muscle responsible for lid closure - ANS Orbicularis oculi
A dense opacity of the cornea is called a: - ANS leukoma
Goblet cells that secrete that secrete mucous into tear film are located in which
structure - ANS Conjunctiva
Transition zone between the bulbar conjunctiva and the palpebral conjunctiva is called -
ANS fornix
Middle layer of the globe is mostly responsible for - ANS Nutrition
Pupillary constriction is called - ANS miosis
Bactericidal ingredient found in the precorneal tear film is - ANS Lysozyme
The cornea is clear, and must remain clear, which means it must be ______, and be
free from ______. - ANS avascular, scarring
what are tarsal plates? - ANS two thin, elongated plates of dense connective tissue,
about 2.5cm in length. Contributes to it's form and support.
what is a prism ballast? - ANS prismatic shape used in contact lens to stabilize the lens
by preventing rotation
how does one achieve the rotational control of truncation? - ANS by making the bottom
edge of the lens flat
what are principal meridians? - ANS the meridians of most and least curvature, or
greatest and least power on a cylindrical or toric surface
, what is a bicurve lens? - ANS lens consisting of two posterior curvatures; one central
curve(base curve) and one peripheral curve
a soft lens should have a curve and diameter that will allow it to drape the cornea, vault
over the limbus, and extend how many mm into the sclera? - ANS 1mm
what angle identifies the smallest angle? - ANS minimum visual angle
if the diameter is kept constant and the base curve is changed, the sagittal depth of the
lens changes. How steep is the base curve, how large is the sag, and how steep is the
fit? - ANS steeper the base curve, the larger the sag and the steeper the fit
given the K's 42.00@180/42.50@90, a manifest Rx of -1.00-.50x180, and your patient
wanting to wear his lenses only on the weekends, which type of lens would you
suggest? - ANS soft spherical
describe the axial edge lift - ANS the vertical distance from the lens edge to an
extension of the base curve of a lens
what is apical bearing or apical touch - ANS posterior lens curvature resting on the
corneal apex
what is an interpalpebral fit? - ANS a well centered rigid lens that fits between the upper
and lower eyelids, where the upper lid does not control the position of the lens.
in fitting a contact lens, if the fitter fits a lens on "K", what does that mean? - ANS the
lenses are fitted to parallel the flatter meridian of the cornea
What is fenestration? - ANS tiny hole in a contact lens, made to enhance the
transmission of tears and oxygen through the lens material
how to evaluate tear quality and quantity - ANS tear break up time; or use Schirmers #1,
or fluorescein, rose Bengal
Schirmer tear test - ANS test performed using filter paper strips to measure tear quantity
when fitting bitoric lenses, you should fit the lens ______ than K, and add plus to
compensate for the lacrimal lens - ANS .50 flatter
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