NCLE TEST REVIEW EXAM WITH CORRECT
QUESTIONS AND CORRECTLY WELL
DEFINED ANSWERS LATEST ALREADY
GRADED A+ 2025 – 2026
The BC of a rigid CTL sitting on a cornea is flatter than the
corneal curvature. Therefore if the lacrimal lens power is
plus or minus? - ANSWERS-Minus
The best type of slit lamp illumination to use for detecting
gross corneal edema is called_____________. - ANSWERS-
Sclerotic scatter
The type of slit lamp illumination that is used primarily for a
general survey of the external eye is called ____________. -
ANSWERS-Diffuse illumination
The type of slit lamp illumination that is useful for
inspecting the anterior surface of a contact lens is called the
___________. - ANSWERS-Direct focal illumination
,If a person wanting CTls has blepharitis, you should do
what? - ANSWERS-Refer them to the prescribing doctor, any
type of "itis" has to go back to the doctor
Where is the giant papillary conjunctivitus located? -
ANSWERS-On the Tarsal plate of the upper eyelid margin
A test used to assess the quality of the precorneal tear film
is called the ________________. - ANSWERS-BUT test (break
up time)
Neovascularization is mainly due to what? - ANSWERS-
Hypoxia, corneal edema, tight contact lens fit
The Radii and Power of an average cornea - ANSWERS-7.85
mm or 43.00 D
What are the layers of the cornea? - ANSWERS-Epithelium,
Bowman's membrane, Stroma, Descemet's membrane,
Endothelium
The main disadvantage of soft contact lenses - ANSWERS-
Protein deposits
, What is it called when contact lenses are used to correct
high myopia? - ANSWERS-Orthokeratology (Ortho-K)
A contact lens with diameter that is larger than the cornea is
a hydrophobic or hydrophilic lens? - ANSWERS-Hydrophilic
lens
Which of the following curves indicates the flattest base
curve:7.50 mm, 37.50 D, 8.60 mm, 49.00 D? - ANSWERS-
37.50 D
A CTL was ordered with a BC of 7.85 mm but was received
from the lab with a BC of 7.80 mm. The BC of the actual lens
is _____. - ANSWERS-.25 D steeper than the ordered CTL.
A CTL with a BC of 7.42 mm is fitting too, a tighter fit may be
achieved by changing the base curve to: 7.46 , 7.85 mm,
8.04 mm, none of these? - ANSWERS-none of these... S.S.S.
rule
A CTL has a BC of 7.50 mm, what would the PPC most likely
be? 7.45 mm, 42.50 D, 7.35 mm, 30.00 D - ANSWERS-30.00
D= 11.25 mm/S.S.S. Rule
QUESTIONS AND CORRECTLY WELL
DEFINED ANSWERS LATEST ALREADY
GRADED A+ 2025 – 2026
The BC of a rigid CTL sitting on a cornea is flatter than the
corneal curvature. Therefore if the lacrimal lens power is
plus or minus? - ANSWERS-Minus
The best type of slit lamp illumination to use for detecting
gross corneal edema is called_____________. - ANSWERS-
Sclerotic scatter
The type of slit lamp illumination that is used primarily for a
general survey of the external eye is called ____________. -
ANSWERS-Diffuse illumination
The type of slit lamp illumination that is useful for
inspecting the anterior surface of a contact lens is called the
___________. - ANSWERS-Direct focal illumination
,If a person wanting CTls has blepharitis, you should do
what? - ANSWERS-Refer them to the prescribing doctor, any
type of "itis" has to go back to the doctor
Where is the giant papillary conjunctivitus located? -
ANSWERS-On the Tarsal plate of the upper eyelid margin
A test used to assess the quality of the precorneal tear film
is called the ________________. - ANSWERS-BUT test (break
up time)
Neovascularization is mainly due to what? - ANSWERS-
Hypoxia, corneal edema, tight contact lens fit
The Radii and Power of an average cornea - ANSWERS-7.85
mm or 43.00 D
What are the layers of the cornea? - ANSWERS-Epithelium,
Bowman's membrane, Stroma, Descemet's membrane,
Endothelium
The main disadvantage of soft contact lenses - ANSWERS-
Protein deposits
, What is it called when contact lenses are used to correct
high myopia? - ANSWERS-Orthokeratology (Ortho-K)
A contact lens with diameter that is larger than the cornea is
a hydrophobic or hydrophilic lens? - ANSWERS-Hydrophilic
lens
Which of the following curves indicates the flattest base
curve:7.50 mm, 37.50 D, 8.60 mm, 49.00 D? - ANSWERS-
37.50 D
A CTL was ordered with a BC of 7.85 mm but was received
from the lab with a BC of 7.80 mm. The BC of the actual lens
is _____. - ANSWERS-.25 D steeper than the ordered CTL.
A CTL with a BC of 7.42 mm is fitting too, a tighter fit may be
achieved by changing the base curve to: 7.46 , 7.85 mm,
8.04 mm, none of these? - ANSWERS-none of these... S.S.S.
rule
A CTL has a BC of 7.50 mm, what would the PPC most likely
be? 7.45 mm, 42.50 D, 7.35 mm, 30.00 D - ANSWERS-30.00
D= 11.25 mm/S.S.S. Rule
