首页
登录
职称英语
A new high-performance contact lens under development at the department for
A new high-performance contact lens under development at the department for
游客
2023-08-14
29
管理
问题
A new high-performance contact lens under development at the department for applied physics at the University of Heidelberg will not only correct ordinary vision defects but will enhance normal night vision as much as five times, making people’s vision sharper than that of cats.
Bille and his team work with an optical instrument called an active mirror—a device used in astronomical telescopes to spot newly emerging stars and far distant galaxies. Connected to a wave-front sensor that tracks and measures the course of a laser beam into the eye and back, the aluminum mirror detects the deficiencies of the cornea, the transparent protective layer covering the lens of the human eye. The highly precise data from the two instruments—which, Bille hopes, will one day be found at the opticians (眼睛商) all over the world—serve as a basis for the production of completely individualized contact lenses that correct and enhance the wearer’s vision.
By day, Bille’s contact lenses will focus rays of light so accurately on the retina (视网膜) that the image of a small leaf or the outline of a far distant tree will be formed with a sharpness that surpasses that of conventional vision aids by almost half a diopter (屈光度). At night, the lenses have an even greater potential. "Because the new lens—in contrast to the already existing ones—also works when it’s dark and the pupil is wide open," says Bille, "lens wearers will be able to identify a face at a distance of 100 meters"—80 meters farther than they would normally be able to see. In his experiments night vision was enhanced by an even greater factor in semi-darkness, test subjects could see up to 15 times better than without the lenses.
Bille’s lenses are expected to reach the market in the year 30, and one tentative plan is to use the Internet to transmit information on patients’ visual defects from the optician to the manufacturer, who will then produce and mail the contact lenses within a couple of days. The physicist expects the lenses to cost about a dollar a pair, about the same as conventional one-day disposable lenses. [br] Individualized contact lenses are lenses designed ______.
选项
A、to work like an astronomical telescope
B、to process extremely accurate data
C、to suit the wearer’s specific needs
D、to test the wearer’s eyesight
答案
C
解析
根据第2段最后一句“作为生产完全个性化的隐形眼镜的基础。这种眼镜矫正并提高佩戴者的视力”,可知不同的人有不同的具体需求,必须测量他们的精确数据来设计,答案是C。
转载请注明原文地址:https://tihaiku.com/zcyy/2924882.html
相关试题推荐
Internationalgovernments’inactionconcerningsustainabledevelopmentiscl
Internationalgovernments’inactionconcerningsustainabledevelopmentiscl
Internationalgovernments’inactionconcerningsustainabledevelopmentiscl
Internationalgovernments’inactionconcerningsustainabledevelopmentiscl
经过几千年的发展,这类戏曲艺术才逐渐变得完整。Itwasnotuntilseveralthousandyearsdevelopmentthat
青藏铁路(Qinghai-TibetRailway)是西部大开发(WesternDevelopmentProgram)的标志性工程,是中国新世纪四
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcen
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcen
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcen
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcen
随机试题
在国债基差交易策略中,适宜采用做空基差的情形是()。A、预期基差波幅收窄B、预期基差会变小C、预期基差波幅扩大D、预期价差会变大B做空国债基差
为了提高学生的()能力,教师要指导学生学会如何读书、做笔记,利用图书资料,制定
对图中车辆从路中心黄色虚实线的虚线一侧暂时越过超车,这是允许的。
下列CT表现,哪项是癌性空洞的特征A.薄壁空洞,内有大量液平面 B.厚壁空洞,
戊型肝炎病毒的传播途径是()。A.粪-口传播 B.接触传播 C.叮咬传播
最古老也是应用最广、最普遍的教学方法是()A.讨论法 B.谈话法 C.讲
银行在确立市场定位战略前,首先应明确的事项包括()。A.经济周期的波动状况
保证收益理财产品对客户是有附加条件的,商业银行不可以采取的附加条件是()。
王某和张某就买卖合同达成了仲裁协议,在王某不履行合同义务的情况下,张某向仲裁机构
氟牙症病理学改变不包括A.釉柱矿化不良 B.釉柱鞘区增宽 C.釉质生长线明显
最新回复
(
0
)