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MC Question #1
MC Question #2
MC Question #3
MCQuestion #4
MC Question #5
100
Fluorescein
What stain is used to assess the fit of rigid gas permeable lenses?
100
Decrease overal lens diameter
How a RGP lens diameter has to be modified in order to increase lens movement ?
100
Plus tear lens power
What tear lens power will create a spherical RGP lens fitted steeper than the flattest K?
100
Soft contact lens
What type of contact lens will always create a plano-lacrimal lens?
100
To stabilize a soft lens from rotating
For what purpose an inferior portion of a soft lens can be cut down?
200
Lens design
Which factor willinfluence lens stability the most?
200
Rotational stability
Minimum shifting of scribe marks during lens movement is known as?
200
ATR astigmatism
A steep horizontal meridian is found in which type of astigmatism?
200
3 prism diopter prism down
What is the maximum amount of prism that can be added on a soft toric lens to stabilize the lens from rotating?
200
At 6 o'clock
Where is the laser marking placed on lenses with prism ballast ?
300
WTR astigmatism
What type of astigmatism will cause a contact lens to ride up and down?
300
Dual thickness ( Thin zones) design
What lens stabilization design will move slower with the blink?
300
Prism ballast
What method of lens stabilization will induce vertical imbalance if the lens in the other eye is spherical?
300
When the cornea is shperical or almost spherical
When you have to choose a front toric lens design?
300
5 degrees
What is the acceptable rotation of soft toric lenses in the eye?
400
Poor vision
Toric lens rotation, tight or loose fit will cause?
400
Within 1 minute
A lens is said to have good rotational recovery when returns in its primary gaze in?
400
LARS or CAAS
Name a method of compensating for lens rotation.
400
Discomfort
Foreign body sensation, excessive movement and lens awareness will create?
500
Front toric lens design
What lens design will show prism when power is read with the lensometer?
500
Upper lid attachment
What fitting philosophy is used to fit a large and flat cornea?
500
Rigid spherical
What lens design is most suitable when corneal toricity is no more than 3D and is almost equal with the spectacle cylinder?
500
Spe, CPE ( toric diagnostic lenses)
What type of diagnostic lenses are used when the corneal toricity is more than 3D?
500
Interpalpebral fit
What fitting philosophy is used when fitting steep and small corneas?