With gorgeous high resolutions displays, my eyes really enjoy high resolution fonts.
Unfortunately the Lumerical tools don’t support the Retina displays on MacOS and the fonts are blurry:
There is a solution however! The solution is an app, Retinizer, http://retinizer.mikelpr.com/
Run the app, drag and drop the Lumerical tool onto it. Next time you restart the tool, all the fonts in the dialogs, script editor, etc, will be nice and sharp!