How the Egyptians saw the sperm in semen as illustrated in the writings at the Luxor Temple

A fascinating little observation:

At first glance this image is surprising and perhaps vulgar:

However, a closer inspection reveals startling details that are easily missed at first, notice how the eye is looking through a plano-convex lens into the semen which reveals the sperm:

Another image angle:

Interesting modern lens diagrams:
See image search here: Google Images