Hi Neha,

Thanks for your question. Unfortunately, it's not the kind of question we're really equipped to answer here at Zemax Support. If you have any questions that come up with the use of OpticStudio for spectral/color analysis, we'd be happy to help out.

Meanwhile, if you wanted to specify what you mean by 'best' or in what sense you want to differentiate, perhaps some community members who know more about ophlalmic materials or chromatic properties of lenses and glasses in general could provide some guidance.