Math & Science ⇒ Increase font size of LaTeX only in LyX

[manishr]

howto increase the size of only latex part ?
there is lot of mathematical equations and symbol become hard to read when symbols goes in subscript of subscript. zooming the whole page is not an option so i am looking for a way or script something which automatically increase font size of the mathematical equations only.

i am using lyx.

thanks in advance