Ingredients for cleaning optical elements
It might possibly be intended to dissolve an adherent organic film, such as that left by evaporation of plasticizers from foam packaging.

However, it also might well partially dissolve paints and cements used in the lens assembly, leaving yet harder-to-remove dirt on the lens. Unless you have a specific need for those solvents, use distilled water and/or isopropanol, according to B&amp;H.