Time Domain OCT Spectral Domain OCT

RPE

OS/MV

IS/OS

Spectral Domain OCT (Enhanced Depth Imaging tech)

ThicknessContourIrregularitiesFragmentation

Detachment of Bruch’s membrane.

Abnormal structures anterior or posterior to the RPE.

RPE Changes in SD-OCT

Variation Vs. Shadowing artifacts.

1. RPE band thickening

Localized thickening Occult CNVM

1. RPE band thickening

Localized thickening Proliferation at edges of atrophy

2. RPE band thinning

Localized or diffuse thinning Atrophy

2. RPE band thinning

Localized or diffuse thinning Atrophy

2. RPE band thinning

Localized or diffuse thinning Atrophy

3. RPE discontinuity

RPE tear and retraction CNVM

3. RPE discontinuity

Shadowing or masking Hge, intraretinal deposits, Blood vessels

3. RPE discontinuity

Shadowing or masking Hge, intraretinal deposits, Blood vessels

3. RPE discontinuity

Shadowing or masking Hge, intraretinal deposits, Blood vessels

3. RPE discontinuity

Shadowing or masking Hge, intraretinal deposits, Blood vessels

4. RPE elevation

Drusen

4. RPE elevation

Drusen- large or confluent “Drusenoid RPE detachment”

4. RPE elevation

Drusen- large or confluent “Drusenoid RPE detachment”

4. RPE elevation

Drusen Reticular Drusen or pseudodrusen

“Subretinal drusenoid deposits”

4. RPE elevation

Drusen Reticular Drusen or pseudodrusen

“Subretinal drusenoid deposits”

4. RPE elevation

RPE Detachment • Serous• Fibrovascular• Hgic

4. RPE elevation

RPE Detachment • SerousOccult CNVM

4. RPE elevation

RPE Detachment • SerousOccult CNVM

4. RPE elevation

RPE Detachment • Serous CSCR

4. RPE elevation

RPE Detachment • Serous CSCR

4. RPE elevation

RPE Detachment • Hgic, Vascular and Fibrovascular

4. RPE elevation

RPE Detachment • Hgic, Vascular and Fibrovascular

4. RPE elevation

RPE Detachment • Hgic, Vascular and Fibrovascular

5. Abnormal deposits

Vitelliform material Best disease

5. Abnormal deposits

Vitelliform material Adult type

5. Abnormal deposits

Inflammatory deposits APMPPE

5. Abnormal deposits

Inflammatory deposits APMPPE

“It is through living that we discover ourselves, at the same time as we discover

the world around us.” ….. Henri Cartier-Bresson