Cornea injuries have a bunch of causes. Being hit by objects and insertion of dust or chemicals can damage the cornea. Another possible factor is dryness or allergies. Corneal ulcers can appear by infection with a virus or bacteria, or injury or chronic dryness. Keratitis, another kind of corneal injury happens when people wear hard contact lenses for a long time, or when exposed to too much ultra violet light.
These cornea injuries lead to many effects. They may have eye pain, sensitivity to light, bloodshot eyes, a feeling that something is in the eye, blurred vision and possibly a white spot on the cornea. Also, vision can be destroyed. For another, when someone has Keratitis, the cells on the outer layer of his cornea die.
To fortunate, cornea injuries can be cured in several ways. First of all, corneal grafting is possible. Cornea can be replaced with another corneal tissue. In other cases, physician put a few drops of special liquid in the eye. For Keratitis, antibiotic ointment or artificial tears are used.
Alvin님. 조언 부탁드립니다
제가 쓴것은 통합형 이구요 .
기존의 그 반대 형식과 는 좀 달라서 잘쓰지는 못했습니다.
Reading passage 와 Listening script 가 반대내용이 아닐경우에 이렇게 쓰는 게 맞는지
제가 이런거 써보는게 처음이라 많이 당황해서 대본 그대로 내용 가져다 쓴것두 많아요.
밑에 Reading 과 Listening 그리고 question 달아놓겠습니다
Alvin 님 바쁘시겠지만 한번만 읽어주세요 ^^
그럼 새해 복 많이 받으세요~
Reading passage
The transparent front part of the human eye is a five-layer structure called the cornea. The cornea is dense and even in thickness, projecting like a dome beyond the white of the eye and protecting the iris and pupil.
A clear cornea is necessary for clear vision, and an injury to the cornea can pose a long-term problem. A corneal injury may lead to an ulcer, or it may leave a small area of scar tissue after it heals. The location of the injury or ulcer and the remaining scar tissue will determine whether or not there may be vision problems. The are around the edge of the cornea is not terribly important for good vision; however, if an ulcer forms at the center of the cornea, the scar tissue it leaves behind could interfere with vision. If a large ulcer occurs in the center of the cornea. it may be necessary to replace the cornea surgically in a procedure called corneal grafting, in which corneal tissue is transplanted from one human eye to another.
Symptoms of a corneal injury include eye pain, sensitivity to light, bloodshot eyes, a feeling that something is in the eye, blurred vision, and possibly a white spot on the cornea. The term keratitis is used to describe a corneal inflammation in which the outermost cells on the surface of the cornea die. With keratitis, the eyes are sensitive to light and they hurt, water, and become bloodshot. In sever case, vision may be impaired.
To diagnose a corneal injury or ulcer, a physician will place a few drops of special liquid in the eye, turn the lights out, and shine a light on the eye while looking at the cornea through a special microscope called a slit lamp. If the surface of the cornea is broken anywhere, it will show up as a bright blue-green area.
Listening audio script
Your cornea can be injured by any number of causes. If something hits you in the face- like a ball, fist, or the dashboard of your car during a traffic accident-your cornea can be injured, and so can the other sensitive tissues around your eye. Any flying debris can be a cause of corneal injury. If you're working with a table saw or any other machine that creates flying debris, one or more small pieces could fly into your eye. Another cause is getting certain chemicals in the eye. A lot of chemicals-like ammonia or chlorine - can injure corneas. So can ill-fitted or poorly cleaned contact lenses. Even ordinary dust can scratch your cornea if you rub your eye when there's dust in it.
Dryness or allergies can cause your cornea to become inflamed. Corneal ulcers can result from injury or chronic dryness, or from infection with a virus, bacteria, fungus, or protozoa, or this is rare- from a nutritional deficiency.
You can get the corneal injury known as keratitis if you wear hard contact lenses for too long, or if your eyes are exposed to too much ultraviolet light. If you have keratitis, it means the cells on the outer layer of your cornea die. A common cause of keratitis is overexposure to ultraviolet light-which can come from the sun, a sunlamp, or even a welding arc. If the cause is exposure to ultraviolet light, the symptoms might not show up until a couple of hours after the exposure stops. Keratitis can be treated. Your eye doctor might prescribe antibiotic ointment or drops... or artificial tears, and you might have to wear an eye patch until your cornea can heal.
Question
Describe the causes and consequences of corneal injuries and ulcers and explain how these problems are treated.