III. The Human Eye — Albinism
Now, gentlemen, everything that is there (pointing to the drawing) ends here in a kind of muscle. This muscle carries the lens. This is a completely transparent body. Why transparent? So that you can get to the light. And behind this body here is a thick liquid. In front of it is an even thicker liquid, and in this thicker liquid at the front floats the iris or rainbow skin, which is located here near the veins. It really floats in the liquid and leaves a hole open for the light. This hole appears black when you look into it, because you look through the entire eye to the background, which is black.
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