Fluorescein Patterns - RGP Lenses Flashcards


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created 2 years ago by OpticalNerd
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updated 2 years ago by OpticalNerd
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1
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Against the Rule Astigmatism

  • Touch along the vertical meridian.
    • Flattest Curve in the 90 Meridian
  • Pooling (clearance) along the horizontal meridian
    • Steepest Curve in the 180 meridian

2
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Flat Fit

  • Apical touch
  • Peripheral pooling (clearance)

3
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Ideal Fit

  • Even distribution of teas/fluorescein
  • Bright ring of fluorescein around perimeter due to flatter peripheral curve.

4
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Steep Fit

  • Apical pooling (clearance)
  • Peripheral touch

5
card image

With The Rule Astigmatism

  • Pooling (clearance) along the vertical meridian.
    • Steepest Curve in the 90 Meridian
  • Touch along the horizontal meridian
    • Flattest Curve in the 180 meridian

6

Against the Rule Astigmatism

  • Touch along the vertical meridian.
    • Flattest Curve in the 90 Meridian
  • Pooling (clearance) along the horizontal meridian
    • Steepest Curve in the 180 meridian

7

Flat Fit

  • Apical touch
  • Peripheral pooling (clearance)

8

Ideal Fit

  • Even distribution of teas/fluorescein
  • Bright ring of fluorescein around perimeter due to flatter peripheral curve.

9

Steep Fit

  • Apical pooling (clearance)
  • Peripheral touch

10

With The Rule Astigmatism

  • Pooling (clearance) along the vertical meridian.
    • Steepest Curve in the 90 Meridian
  • Touch along the horizontal meridian
    • Flattest Curve in the 180 meridian