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Lens Maintenance
1. If the lens is dirty, it can be wiped with a glasses cloth, or it
can be rinsed under running water, then gently blotted with
a paper towel. Never use your fingers or hard objects to
wipe it.
2. If the mirror is fogged and the water cannot be washed away,
it can be washed with water containing detergent. Then it
can be washed twice with running water.
3. When wiping the glasses, use professional glasses cloth to
avoid entraining the lens with fine particles. The sweat of
the human body is corrosive. If the glasses stick to sweat,
they should be cleaned in time. The stains on the glasses
that are difficult to erase can be wiped with a low
concentration of neutral detergent.