NCLE Practice Exam Questions and Correct
AnswersNCLE Practice Exam Questions and Correct
AnswersNCLE Practice Exam Questions and Correct
AnswersNCLE Practice Exam Questions and Correct
AnswersNCLE Practice Exam Questions and Correct
AnswersNCLE Practice Exam Questions and Correct
Answer...
NCLE Practice Exam Questions and Correct
Answers
The advantages aphakia have over spectacle lenses
✓ ~~~ Less peripheral aberration
✓ Less magnification
✓ Increase visual field
not having a lens inside your eye
✓ ~~~ Aphakia
Which of the following can aphakia cause, myopia or hypermetropia?
✓ ~~~ Hypermetropia
Causes of aphakia
✓ ~~~ *Congenital absence of lens
*Surgical Aphakia
*Absorption of lens matter
*Traumatic extrusion (push or forced out)
*Posterior dislocation- in vitreous, causes optical aphakia
The cornea thins and bulges outward into a cone shape
✓ ~~~ Keratoconus
,Symptoms of Keratoconus
✓ ~~~ *distorted, blurred, double vision
*inability to see dim light
*sensitivity to light
Signs of keratoconus
✓ ~~~ CORNEAL THINNING AT THE APEX
CHANGES OF ASTIGMATISM
DECREASING VISION IN ONE EYE
cause of keratoconus
✓ ~~~ Cause is unknown, but it is believed to be present at birth or the loss of
collagen in the cornea
How can be keratoconus be treated?
✓ ~~~ *Surgical treatment
*Vision correction
*specialty contact
*Corneal cross link
Slows down and stop the progression of keratoconus but doesn't improve vision
✓ ~~~ Cornea Cross Linking
, A conical shaped cornea can best be fit with contact lenses through the use of:
A.trial lenses
B. keratometer readings
C. eye impressions
D. topogometer readings
✓ ~~~ A. Trial lenses
Prism ballast lenses can be useful for:
✓ ~~~ For cylindrical lenses and some bifocals
Helping to reduce lens rotation
What type of contacts needs prism ballast?
✓ ~~~ Front surface toric GP and bifocal/multifocal GP
What type of contacts does not need prism ballast
✓ ~~~ Back surface toric, Bitoric, and Spherical lenses
Base down prism from 0.75-1.5 diopters weighs the lens down and keeps it stable so
it doesn't rotate
✓ ~~~ Prism ballast
Bitoric lenses are prescribed:
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