retinal imaging and oct
optical coherence tomography
Optical coherence tomography (OCT) is a non-invasive imaging test.
Similar to an ultrasound, it uses light waves to take cross-section pictures of your retina.
With an OCT, your optometrist can see each of the retina's distinctive layers and predict early nerve loss.
fundus photography/retinal imaging
Fundus Photography/Retinal imaging takes a digital 2D flat picture of the back of your eye.
It shows the retina(, the optic disc and blood vessels.