Hello,

I am new in pov ray, and I want to ask a question...

I want to create a human eye, and I have managed to do the basic things, by
reading material from here and there. However, what I want to do is to have
a precise model of the optics of the eye. For example, the cornea is not one
layer, but two layers with different refraction indexes.

So, my question is:

I want that the light refracts in the interface between the two layers. If I
use merge, will this be done? I know that merge removes the inner surfaces,
but in this case we are talking about different refraction indexes...
If I use union, will it just put (e.g) one sphere in the other, with the
internal sphere keeping all the refraction characteristics?

Thank you for your answer, sorry if it was answered somewhere else also...

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