Here's how to clean your eyeglasses properly.
1 Clean well: Start with removing all the dirt or dust particles by rinsing the lens thoroughly under a stream of tepid water. Failure to perform this first step will eventually result in scratches on the lens that cannot be removed.
2 Use soap: Then apply a small amount of water-diluted hand soap or dish soap to lenses. Gently rub soapy water on lenses to clean the entire surface.
3 Rinse again: Rinse the lenses thoroughly again under a stream of water. Continue rinsing the lenses until the water runs clear. Tap or gently shake excess water from the lenses.
4 Wipe it dry: Wipe the lenses dry with the lens cleaning cloth provided by your optician or a soft lint-free cloth such as a flour-sack towel.
5 Encore: Brush grime off the nose pads with a soft toothbrush. Be careful not to graze the lenses. Put your glasses back on after inspecting for any more spots or bits of washing up liquid left behind. If there is still something left behind, repeat the process.