Summarize the following:
Your lens will accumulate dust after sitting out for a while, and it’s best to remove the dust before wiping off the lens. A few shots of air should be enough to clean off any dust on the lens. Cans of compressed air are available at most electronic supply shops and hardware stores. The can should come with a thin straw that can be inserted in the spray spout for greater accuracy. An optical lens microfiber cloth, like those used to clean eyeglasses, is ideal. Never use liquid cleaners or water on your lenses, as moisture can damage the electronic components. Use the microfiber cloth to wipe a small circle in the center of the lens. Then wipe in increasingly larger circles until you reach the outer edge of the lens. Do this 2 or 3 times if necessary. If you want to protect your lenses from dust and oils, it can be a good idea to use plastic protectors like those used on phone screens. You can do this by buying phone screen protectors and cutting them to fit the shape of your lenses. Change them whenever they become dirty, streaked or dusty.

Summary:
Use compressed air to clear any dust from the lens. Wipe the lens with a dry microfiber cloth. Start in the center of the lens and wipe in a circular motion. Cut phone screen protectors to fit the lenses for extra protection.