Start gently
Rinse dust away with lukewarm water. Use a drop of pH-neutral washing-up liquid, then rinse thoroughly.
Choose the right cloth
Dry gently with a clean microfiber spectacle cloth. Avoid wiping your lenses with a shirt or paper tissue.
Keep them away from heat
Store your glasses in their case and avoid leaving them in a hot car. Follow the care instructions for your particular lenses and frame.
Source: ZEISS guidance on cleaning and caring for glasses. Read the source