Trying hard to protect my eyes, my eyesight had been in an excellent condition before I entered high school. However, there was so much homework then that my eyes failed to have rest at anytime except the sleeping period. At last, I went to the hospital accompanied with my mother, and what made me desperate [...]
When it comes to talking about glasses, many people will say: Glasses, oh, we are familiar with them. But are we really familiar with the knowledge of glasses? I am not a specialist in glasses. However, I will say something about them from my experiences and books, Glasses are composed by lens and frames, which [...]