Cloth wipes are best for delicate, coated lenses, like those on a monocular. You can use a microfiber eyeglass cloth, a cotton ball, or a cotton rag.
[header] How to care for a monocular [title] Wipe off the lens. [step] A monocular has two lenses: the ocular lens (which you put up to your eye) and the objective lens. You should keep both clean to ensure maximum visibility.