Bandage SCL Written Exam Questions And Answers Guaranteed Pass.
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Course
SCL.
Institution
SCL.
What are the 4 lenses that you can use as a BCL? - correct answer PAAU
1. Pure Vision (30d CW)
2. Air Optix Night & Day Aqua (30d CW)
3. Acuvue Oasys (1-7d EW)
4. UCL (7d EW)
If a BCL is required for longer than 3 days what material would be be...
What are the 4 lenses that you can use as a BCL? - correct answer PAAU
1. Pure Vision (30d CW)
2. Air Optix Night & Day Aqua (30d CW)
3. Acuvue Oasys (1-7d EW)
4. UCL (7d EW)
If a BCL is required for longer than 3 days what material would be best? - correct answer
SiHy
If you need a medication to deposit within the BCL, what material would be best at holding and
delivering topical medicaitons? - correct answer Hydrogel
What is lens rotation dependent of? - correct answer lid anatomy and blink
lens sphere and cyl powers do not play a role on lens rotation
How is peri-ballasting done? - correct answer similar concept to prism
ballasting
- in high minus lenticular
- superior portion of lens edge is thinned = prism like rotational stabilization effect
Which stabilization involves thinning both the upper and lower sections of the lens? - correct answer
thin zone aka double slab-off or dynamic stabilization
Watermelon Seed Principle
upper and lower lid forces push the thickest portion of the lens away
, What principle supports the *Double Slab-Off* method? - correct answer
Watermelon Seed Principle
What types of patients would be more successful in a thin zone lens? - correct answer
myopes and ATR
problems with loose lids
better comfort compared to other stabilization methods
How much of the lower portion of the lens is removed through truncation? - correct answer
0.50-1.50mm of plastic from lower lens edge
stabilizes lens by alignment with the lower lid margin
can be used with prism ballast
What is the concept behind back surface toricity?
*saddle fits the horse* - correct answer flatter BC = flatter corneal meridian
steeper BC = steeper corneal meridian
toric curves are confined to the optical zone
What is ineffective if used alone in an SCL? - correct answer back surface
toricity
What is the minimum spectacle cylinder for a toric SCL to be used? - correct answer
0.75DC
anything below = use spherical equivalent
note = some 0.75DC patients are still successful in a spherical SCL
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