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Thanks for reminding me.

Thanks Darryl, you're the best.

Love the thin prism approximation... just a tad simpler. ;)

I need someone to tell me if I've done this right...

Trying to calculate prism in diopters given an index of refraction and the angle of a flat prism.

Prism angle = 4.1 deg
I = 1.52

If...