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IN THE NAME OF GOD. Dr. Amin Hossein Rahgozar. Pentacam. Advantages:. Scheimpflug rotating camera with central camera for fixation Elevation based system Slight blue light Eliminate the effect of eye moving Exact pachymetry Near virtual pictures of AC in 2 seconds

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in the name of god

IN THE NAME OF GOD

Dr. AminHosseinRahgozar

advantages
Advantages:
  • Scheimpflug rotating camera with central camera for fixation
  • Elevation based system
  • Slight blue light
  • Eliminate the effect of eye moving
  • Exact pachymetry
  • Near virtual pictures of AC in 2 seconds
  • Measure of AC angle, AC volume, AC depth, pupil diameter and eccentricity
  • More exact post corneal elevation measuring
continue1
continue
  • 50 images during one scan with 500 true elevation points per image (total 25000 points)
  • Repeatable with high sensitivity (compare 2 exams)
the pentacam program
The Pentacam Program
  • Patient
  • Examination
  • Settings
  • Display
4 map selectable
4 map selectable
  • 1. Ant. Elevation
  • 2. Post. Elevation
  • 3. Sagittal curvature (front)
  • 4. Pachymetry
elevation interpretation
Elevation interpretation
  • If you are using the manual 8 mm zone for fitting the BFS, the proposed screening
    • Anterior Elevation differences > +8 μm are typically indicative of keratoconus or other ectaticdisorders (in the central zone)
    • Posterior Elevation differences >16 μm are suspicious
keratoconus map
Keratoconus map
  • 1. Indices
  • 2. Thickness progression
  • 3. Sagittal curvature
  • 4. Corneal thickness
  • 5. Back elevation
indices
Indices
  • ISV = Index of surface Variance
  • IVA= Index of Vertical Asymmetry
  • KI= Keratoconus –Index
  • CKI= center Keratoconus –Index
  • Rmin=Radii minimum
  • IHA = Index of Height Asymmetric
  • IHD = Index of Height Decantation
  • ABR = Aberration coefficient
belin ambrosio enhanced ectasia display
Belin/Ambrosio Enhanced Ectasia Display
  • 1.Standard v/s enhanced BFS
  • 2. Pachymetric map
  • 3. Corneal thickness & progression (CTSP- PTI)
standard v s enhanced bfs
Standard v/s enhanced BFS

Standard Best Fitted Sphere (BFS)

Enhanced BFS

holladay pentacam report
Holladay Pentacam Report
  • A. Measuring of Equivalent K-Reading (EKR)
  • B. Detecting Form Fruste KC

1.Relative pachymetry > -5%

2. Back elevation > 15 micron

3.Nipple in Tangential map > 48 D

slide24
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