Glasses
Glasses have become an indispensible accessories in our daily lives.
Most of people used them for vision correction. One who is nearsighted
can wear glasses with concave lens to make his vision clear. And one
with far-sightedness uses glasses with convex lens for correction. Later,
other kinds of glases, such as sunglasses or goggles, had been created to
protect our eyes. They are made of specialized materials which make them
different from ordinary glasses. There may also be some coating in the
surface of these glasses to lessen the penetration of radiation into our
eyes. Recently, some people, especially teenagers, use glasses as an
accessory in their clothing. They change different glasses in different
occasions. Glasses have become viewed as something that can show their
own styles.
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