1. Dr. Amin Hossein Rahgozar
IN THE NAME OF GOD
Dr. Amin Hossein Rahgozar

2. Pentacam

3. 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

4. Continue Anterior elevation Posterior elevation Pentacam 6.5 9.8
Orbscan
10.3
30.3

5. continue
50 images during one scan with 500 true elevation points per image (total points)
Repeatable with high sensitivity (compare 2 exams)

6. The Pentacam Program
Patient
Examination
Settings
Display

7. 4 map selectable 1. Ant. Elevation 2. Post. Elevation
3. Sagittal curvature (front)
4. Pachymetry

9. 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 ectatic disorders (in the central zone)
Posterior Elevation differences >16 μm are suspicious

11. 1 large color map

12. Ellipsoid

15. Keratoconus map 1. Indices 2. Thickness progression
3. Sagittal curvature
4. Corneal thickness
5. Back elevation

16. 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

17. Keratocounus indices (only ant. Surface)

19. Belin/Ambrosio Enhanced Ectasia Display
1.Standard v/s enhanced BFS
2. Pachymetric map
3. Corneal thickness & progression (CTSP- PTI)

20. Standard v/s enhanced BFS
Standard Best Fitted Sphere (BFS)
Enhanced BFS

23. 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

24. ضمن عرض پوزش
بدلیل حجم بالای LECTUER ادامه اسلایدها امکان پذیر نمیباشد در صورت نیاز به ادامه لطفا به واحد سمعی و بصری مرکز آموزشی درمانی فیض مراجعه و یا با شماره تلفن داخلی 392 تماس حاصل نمائید با تشکر