OCT

A cross section showing the layers of the eye using low coherence interferometry

1. infrared light emitted - travels to an interferometer

2. light split into 2 using mirror - measurement beam + reference beam

   (Measurement beam travels thru ocular media: absorbed/reflected back)

3. Both beams reflected back

4. Go thru detector depending on how they interact with each other ( in/out of phase)

5. Create OCT image

Drusen- elevation of RPE filled with homogeneous hyper reflective material

CWS

exudates

macular star

Microaneurysm

• round lesions

• hyper-reflective borders

• shadowing under lesion

neovascularisation of the optic disc

CMO

Choroidal folds

Retinal detachment

Sub retinal fluid on oct

Lamellar Mac hole

Separation of inner foveal retina from outer retina

Epiretinal membrane

Proliferation of glial cells

Choroidal melanoma

Choroidal Naevus

AMD -late wet

Scarring of tissue

Diabetic retinopathy

Damage to retinal vasculature