题型:阅读理解 题类:常考题 难易度:普通
湖南省永州市2019-2020学年高二上学期英语期末考试试卷
A new device (设备) called Orion is helping those who are blind to see. It does this in a new way by helping them experience the world around them.
Jason Esterhuizen lost his eyesight after a car accident. He never thought he would be able to see light or movement again. But now with the movement of a switch (开关), his world suddenly grew brighter.
He says, "I still can't put it into words. I mean from being able to see absolutely nothing, it's completely black, to all of a sudden seeing little flickers (闪烁) of light move around." It is not full or normal sight, but Esterhuizen can move about in the world around him.
The new technology uses several parts. One is a small device placed in the brain. The other parts are a video camera on sunglasses and a processing device that can be carried in a person's clothes. When the user points the camera, a signal goes to the processor (处理器) and then back to the glasses. The glasses then are in wireless communication with the device in the brain. The information causes a pattern to develop in the part of the brain. The pattern helps users sense or see movement and shapes of light. And it all happens in seconds.
Esterhuizen is one of just two people in the U.S. testing this technology. He says that "I can tell someone moving across the room, walking past me or walking away from me, or it's a light against the wall. It is just amazing to have some form of functional vision again." He adds that now he can do everyday activities around his home that he once could not. It is easier to walk outside.
The researchers believe that one day this technology could help people who have lost their vision because of illnesses like diabetes. It may also help those with poor vision or who were born blind.
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