The macula OCT: An Overview

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The macula OCT An Overview

• madhusudan davda

Superspeciality Retina Care Centre
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Why do we want an OCT?

• to check if there is a pathology unexplained
  DOV, media haze (pre cataract), as routine work
  up for MFIOLs
• document a clinical pathology? ERM, FTMH
• follow up post treatment in cases CSME, ARMD
• prognosticate a disease almost all pathologies

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What to look for in an OCT?

• What OCT is it? macula, ONH, RNFL anterior
• What is the scan Type raster lines, macular
  cube, radial
• study the overall report starting from name,
  date, signal strength etc

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check the demographics
check the scan type
check the signal strength
check the thickness map
check the subfield thickness
read the actual OCT image
check the scan direction
study different layers
check for missing zones
take multiple scans using different protocols
clinically examine
report the scan
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always see the whole scan, scroll through
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questions to be asked

• is there a pathology?
• what is the level at which it is?
• what are the morphologic changes visible?
• can we predict duration prognosis?
• is the disease active/inactive?

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Normal OCT layers
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Normal OCT zones
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The normal OCT

• vitreous
• vitreo retinal interface
• neurosensory retina
• retinal pigment epithelium
• choroid

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Vitreous
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Vitreous
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Vitreous
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vitreo retinal interface
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vitreo retinal interface
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vitreo retinal interface
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vitreo retinal interface
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vitreo retinal interface
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Neurosensory retina inner retina
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Neurosensory retina outer retina
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spongiform CSME
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csme predominantly cystoid
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csme predominantly cystoid
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vein occlusions BRVO
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vein occlusions CRVO
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RPE
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Pre RPE CNVM
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Sub RPE CNVM
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myopic cnvm
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ILM
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predict prognosis
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• Thank you

• team merc

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• you are here not because of me, rather I stand
  here because of all of you

• myself