Glasses are expensive, plain and simple, so taking good care of them is very important. Everything, from how you carry them in your bag (always put them in their case) to how you clean them, can cause scratches on the lenses if not done the correct way. That's why we're focusing in on a step-by-step guide on exactly how to clean glasses without scratching them. The good news? It's easier than you might initially think and only requires a few tools. Follow these steps, and you'll have crystal-clear vision (and scratch-free lenses) for a long time. Ahead, five easy steps to cleaning your glasses.