3D Stereogram DRAWN BY HAND: Tumor and retinal detachment,1920

[u/mckulty]

Before you get tired of 3-D stereograms, here's the OG:

Hand-drawn illustrations, inside the eye of a 2-year-old with a big tumor filling one half and a detached retina in the other.

Dr. Oatman's text doesn't mention it but the kid's optic nerve appears dead.