Walking in the streets, we could often see people wearing glasses. Glasses can help those with vision problems such as myopia, hyperopia or astigmatism, to correct or ameliorate their vision abilities. Also, people often wear sunglasses to protect them from the sunlight and to enhance their attractiveness and charm. In this essay some basic knowledge on how to take good care of their beloved glasses will be provided for those glasses-wearers group.   How to take her on and off?   Adult glasses wearers should hold the two legs with one hand each and take on or off the glasses along the cheeks parallelly. For children, due to the relative large measurements of heads compared to their bodies, glasses should be taken on or off from under and forward of the face to avoid making the two legs open too much and thus becoming out of shape quickly. Note that glasses should be take on or off with two hands at the same time, otherwise the glasses would undergo a non-uniform load at two legs, and lead to deformation of spectacle frame more easily.   How to place her appropriately?   Make sure the glasses you have taken off be placed on the table appropriately. She should be placed with the lens upwards, instead of adjacent to the tabletop. Figure1 and figure2 below show the right and wrong method of placement, respectively. If you will not use your glasses for a longer time, you should put them in a case for protection.              How to keep her clean and clear?   Your glasses should be cleaned regularly. If there are some spots or dirt on the lens, you can purge them in clear water or a neutral detergent of light concentrations, and then wipe them up with a glasses cloth. Note that you’;d better not use a dry cloth to wipe directly, or the glasses may be abraded pictures on the lens.   Besides the above suggestions, some other tips include that 1)glasses should be avoided placing together with pointed or hard objects like keys and watches, so as not to be abraded by them; 2)you should regularly go to the optical shop to let professionals have a physical examination for your beloved glasses, such as whether they are out of shape, whether the screws on the frames are loosely attached, etc, and you can also clean them more thotoughly in the supersonic cleaner there. I am sure your beloved glasses must always be in wonderful condition if you follow these warm tips above.