Glasses are very important invention which already benefits millions of people all over the world. Yet there is some side effects of wearing glasses just like any other thing has its benefit as well as side effects. For me, the first thing of their side effects is the indentation left in face after years' of wearing. Although light material and frame is adapted for glasses manufacturing now, no matter how light they are, wearing them always leave indentations beside the bridge of my nose and my temple near to my ears. For any girls, no one likes that. If you happen to have a pair of beautiful big eyes, you don't like wearing them too because they would hide your eyes. Besides, it is not very convenient to have any running or contact sports while wearing them. They are easy to get dirty, so the vision they provide, for me, is not as clear as the vision that contact lenses provides me. There is another drawback about glasses. In summer, when it is very hot, my face become oily, the glasses always slides down. But no matter what side effects I stated above, it can't stop people wearing glasses. After all clear vision is much more beneficial.
