1 / 24

IN THE NAME OF GOD

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

denim
Download Presentation

IN THE NAME OF GOD

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. IN THE NAME OF GOD Dr. AminHosseinRahgozar

  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

  5. continue • 50 images during one scan with 500 true elevation points per image (total 25000 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

  8. 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

  9. 1 large color map

  10. Ellipsoid

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

  12. 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

  13. Keratocounus indices (only ant. Surface)

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

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

  16. 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

  17. 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 03114476010 داخلی 392تماس حاصل نمائید با تشکر

More Related