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Jackson Cross Cylinder (JCC Part 1)

Quiz by Raja Liyana

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5 questions
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  • Q1
    JCC is used to determine the __________ component of a prescription.
    hyperopic
    presbyopic
    astigmatic
    myopic
    120s
  • Q2
    The power of JCC is picked based on VA with BVS. If VA with BVS is ≥ 6/12, power of JCC used is
    +/-0.25 DC
    +/-0.25 DS
    +/-0.50 DS
    +/-0.50 DC
    120s
  • Q3
    The power of JCC is picked based on VA with BVS. If VA with BVS is 6/12 – 6/24, power of JCC used is
    +/- 0.50 DS
    +/- 1.00 DC
    +/- 0.50DC
    +/- 1.00 DS
    120s
  • Q4
    The power of JCC is picked based on VA with BVS. If VA with BVS is <6/24, power of JCC used is
    +/- 0.50 DS
    +/- 0.25 Ds
    +/- 0.50 DC
    +/- 0.25 DC
    120s
  • Q5
    Choice of target used with JCC can be the following EXCEPT
    Rounded letters ‘O’ or ‘C’ 2 lines above Best VA
    Rounded letters ‘O’ or ‘C’ Best VA
    Double Rings
    Cluster of dots
    120s

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