聽寫填空,只寫填空內(nèi)容,不抄全文,5個(gè)左右的句子,不用寫標(biāo)號(hào),注意標(biāo)點(diǎn),口語(yǔ)中因結(jié)巴等問(wèn)題造成的重復(fù)單詞只寫一遍~

Hints:
Lasik
astigmatism

Astigmatism, which can cause blurry vision, is a problem for millions. The condition stems from a misshapen cornea - the clear covering of the eye that focuses incoming light. EarthSky spoke to Keith Meek of Cardiff University in the U.K., who leads research on the cornea.

Keith Meek: [---1---]

Meek explained that these fibers - made of collagen - are actually arranged in very distinct patterns. [---2---] He says this information could make astigmatism surgery more predictable.

Keith Meek: [---3---]

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Keith Meek: The first thing that I would like to be tried out in a full clinical trial is that donor corneas are oriented the correct way as they came out of the person who donated them into the recipient. [---5---]

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More with Keith Meek at our website. We’re at

【視聽版科學(xué)小組榮譽(yù)出品】
For many years, people thought the cornea was essentially a uniform piece of tissue with fibers running in different directions throughout it. He discovered this by shining X-rays from a particle accelerator through cornea specimens. Over the next five years or so, now we've built up a full three-dimensional map of how the collagen is going in all the different parts of the cornea, all of that information can be fed into a computer model of the cornea. Meek hopes this modeling can be applied to corrective vision surgery like Lasik, and also to cornea transplants. I believe that might affect the amount of astigmatism that you would get following surgery. Meek added that in 10 years time or more, it might even be possible to make a near-perfect artificial cornea.