Day 178/19. An OCT Scan today

Today I had a routine eye test and it included , for the first time, an OCT scan. Impressive technology with instant diagnosis.
Optical coherence tomography (OCT) is a non-invasive imaging test. OCT uses light waves to take cross-section pictures of your retina. With OCT, your ophthalmologist can see each of the retina’s distinctive layers. This allows your ophthalmologist to map and measure their thickness.
These measurements help with diagnosis.
They also provide treatment guidance for glaucoma and diseases of the retina. These retinal diseases include age-related macular degeneration (AMD) and diabetic eye disease.
So, essentially, this is a 3D map of the inside of my left eye....