The glass is properly placed in the box.
Glasses are articles for improving eyesight, protecting eyes or decorating. Glasses can correct myopia, hyperopia, astigmatism, presbyopia, strabismus or amblyopia.
Glasses first appeared in Italy and were invented by the optician Armato and the Italian Spina.
Suzhou, China is the birthplace of China glasses. Technician Sun has developed a kind of lens that can be worn on glasses frequently.