I saw that sentence with the word "refraction" and I wasn't sure if it was the whole idea or if refraction was just one part of a clever design to enhance the e

I saw that sentence with the word "refraction" and I wasn't sure if it was the whole idea or if refraction was just one part of a clever design to enhance the effects of another artificial light source. That's why I felt it was misleading. Looking at the article again, though, it's probably clearer than I originally thought it was.