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
39
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
SpeakerA:So,what’sthestatusofouradvertisingcampaign?SpeakerB:AsIme
______istheoldestandlargestAustralianparty,whichwasformedin1901.A、Aus
[originaltext]Martin:Hithere,Pat.Howareyou?Pat:Fine,thanks,Martin.I
Withtheimprovementoflivingstandards,thegoodspackageshavebecomemorean
JeffBewkescomparedCEOstosomestocksinthat______.[br]Whatcanwelearn
【B1】[br]【B4】[audioFiles]audio_eusm_j01_287(20099)[/audioFiles]supplies此处应该填入一
上楼梯时股四头肌的收缩形式正确的是A.肌肉收缩时起止点相互靠拢 B.肌肉收缩时
甲企业拟购买一项新技术。经预测,该技术可再使用5年。采用该项新技术后,甲企业产品
【材料一】中央红军第五次反“围剿”的失败和长征初期红军力量遭受的严重损失,引起了
被审计单位当年建造完工厂房已投入使用并办理了固定资产竣工决算手续,但注册会计师发
最新回复
(
0
)