进军美利坚作文 第三次作业 8.15 by manio

manioUID: 2581962

The writer of the article provides some general information of corneal injury including the symptoms and treats, while the speaker of the lecture mainly talks about the causes of corneal injuries.

In the first place, the speaker points out several causes of corneal injuries. First, the hit of ball, fist and so forth on the face can lead to the injuries of corneal as well as the tissue around it. Second, debris like those generated from table saw is another reason for the injury. Third, chemical in the eyes also causes troubles. Forth, rubbing the eyes when common dust in them may cause disease too. Fifth, infection of virus, fungus and so on could result in injuries. Of course, there are many other causes like dryness. According to the article, a transplant surgery is necessary if the condition is severe.

In addition, the speaker talks about the causes of keratitis which is a corneal inflammation according to the article. Long time exposure to the sun is one of the reasons responsible for this disease, because the ultraviolet of light can damage the tissue. As for the symptom, it won't emerge until several hours after the exposure stops. And the treatment of this disease could be antibiotic, drug or artificial tears.

In sum, the article gives the general information of corneal injuries and the lecture goes on to focus on the causes of it.