To set up your Dial Vision glasses, simply place them on your face like regular eyeglasses. For first-time use, or whenever your viewing distance changes, locate the small dial on the side of each lens. Gently turn the dial for each eye, observing how your vision changes, until the object you are viewing (e.g., a book, TV screen, or distant sign) comes into perfect focus. These glasses are compatible with most adult head sizes due to their unisex design. For care and maintenance, always clean the lenses with a soft, lint-free cloth, preferably microfiber, to avoid scratching. If necessary, a small amount of lens cleaning spray designed for eyeglasses can be used. Avoid abrasive materials, harsh chemical cleaners, or paper towels, which can damage the lens coating. Store the glasses in a protective case when not in use to prevent scratches and damage.