Optical coherence tomography angiography optovue a very basic lecture detailing the new advancement of dyeless angiography by spectral domain OCT system and SSADA and Motion correction algorithm

1. MOHAMMAD
ABUSAMAK
MD, ABO, FICO
Amman Eye Clinic
Jordan

3. It was FUN…!!

4. …things are about to change...!!

5. Spectral Domain OCT

6. …things are about to change...!!

8. What is the Diagnosis?
1. EPIRETINAL MEMBRANE

9. What is the Diagnosis?
2. DIABETIC CYSTOID
MACULAR EDEMA

10. What is the Diagnosis?
3. MACULAR
DEGENERATION

11. What is the Diagnosis?
1. Epiretinal membrane
2. Diabetic cystoid
macular edema
3. Macular degeneration

12. …2007 was a breakthrough

13. …2007 was a breakthrough

14. How Does OCT-A Work?
So smart, so simple
OCT image is a structural, cross-sectional, B-scan image.
OCT works by sending a long-wavelength light, then detecting
changes that occurred on the tissue-reflected light; thereby, it
converts the reflected light into an image.

15. How Does OCT-A Work?
So smart, so simple
OCT-A machine captures multiple conventional
structural OCT images at the same site.
Then, it compares the resulting differences
between them (decorrelation):
• If the imaged area is avascular, then no
difference among the multiple images will be
detected, and the OCT-A will appear black.

16. How Does OCT-A Work?
So smart, so simple

17. How Does OCT-A Work?
So smart, so simple
If the imaged area is
vascular, intravascular
turbulence will cause
differences among
the multiple images;
this difference will be
depicted as vessels..

18. OCT-A is the beginning of a promising future
of retinal vascular imaging

19. Using OCT-A in Daily practice
First we need to understand basic analysis
Segmentation

20. Segmentation

25. OCT Angiography in Daily Practice…

26. Diabetic Macular Ischemia
Notice that in diabetic macular
ischemia: deep plexus is affected
more than superficial plexus

27. FAZ contour and Ischemia

30. Mac Tel and BRVO

31. Myopia CNV

32. Ocular surface angiograms

33. Iris Angiogram

34. Conjunctiva Angiogram

35. The evidence behind the OCT-A
• OCT and angiography is eliciting commercial and clinical
interest
• powerful research tool changing classification and
management of glaucoma, cornea, retina, and anterior
segment
• Its power in its reproducibility and high resolution

36. The evidence behind the OCT-A

37. The evidence behind the OCT-A

38. The evidence behind the OCT-A

39. The evidence behind the OCT-A

40. The evidence behind the OCT-A

41. Our 1st
Question: What Is our Diagnosis?

42. After OCT-A?

43. After OCT-A?

44. …this is the FUTURE