研究称深红色光能有效预防视力衰退

时间:2020-07-05 14:39:41

(单词翻译:单击)

根据本周发表在《老年学杂志》上的一项新研究,只要凝视深红色光几分钟,就能有效地预防视力衰退。研究者说说,其科学原理在于红光可以增进线粒体的健康,线粒体就像我们身体细胞的电池。
、A few minutes of looking into a deep red light could have a dramatic effect on preventing eyesight decline as we age, according to a new study published this week in The Journals of Gerontology.
 
"You don't need to use it for very long to start getting a strong result," said lead author Glen Jeffery, a professor of neuroscience at University College London's Institute of Ophthalmology.
 
The science works, Jeffery said, because the light stimulates1 the health of mitochondria, which are like batteries in our cells.
 
And because mitochondria are implicated2 in a broad range of diseases, insights like these could help lead to new treatments for diseases including Parkinson's and diabetes3.
 
The study was small, a pilot study to test the concept. Researchers recruited 12 men and 12 women, whose ages ranged from 28 to 72. Each participant was given a small handheld flashlight that emitted a red light with a wavelength4 of 670 nanometers. That wavelength is toward the long end of the visible spectrum5, and just short of an infrared6 wavelength, which tends to be invisible to the human eye.
 
They spent three minutes each day looking into the light over a period of two weeks.
 
The lights work on both cones8 and rods in the eye. Cones are photo receptor cells that detect color and work best in well-lit situations. Rods, which are much more plentiful9, are retina cells that specialize in helping10 us see in dim light, according to the American Academy of Ophthalmology.
 
Researchers measured the cone7 function in subjects' eyes by having them identify colored letters with low contrast. And they measured their eyes' rod sensitivity by asking them to detect light signals in the dark.
 
There was a 14% improvement in the ability to see colors, or cone color contrast sensitivity, for the entire two dozen participants.
 
Improvement, however, was most significant in study participants over age 40. For those ages, cone color contrast sensitivity rose by 20% over the course of the study.
 
That age bracket also saw significant increases in rod threshold, which corresponds to the ability to see in low light. Study participants under 40 also experienced some improvement, but didn't see the same jump as older subjects. Younger eyes haven't declined as much as older eyes.
 
"The retina ages faster than any other organ in your body," Jeffery said. "From an evolutionary11 perspective, we fundamentally have never lived past 40."
Now, of course, we regularly live well beyond that age, and need ways to nurture12 the organs that for millennia13 have been the most likely to wear out earliest in life.
 
But more studies are needed to prove it helps.
 
"We're all going to suffer from aging. So let's try to go gently if we can," Jeffery said.

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1 stimulates 7384b1562fa5973e17b0984305c09f3e     
v.刺激( stimulate的第三人称单数 );激励;使兴奋;起兴奋作用,起刺激作用,起促进作用
参考例句:
  • Exercise stimulates the body. 运动促进身体健康。 来自《简明英汉词典》
  • Alcohol stimulates the action of the heart. 酒刺激心脏的活动。 来自《现代英汉综合大词典》
2 implicated 8443a53107b44913ed0a3f12cadfa423     
adj.密切关联的;牵涉其中的
参考例句:
  • These groups are very strongly implicated in the violence. 这些组织与这起暴力事件有着极大的关联。 来自《简明英汉词典》
  • Having the stolen goods in his possession implicated him in the robbery. 因藏有赃物使他涉有偷盗的嫌疑。 来自《现代汉英综合大词典》
3 diabetes uPnzu     
n.糖尿病
参考例句:
  • In case of diabetes, physicians advise against the use of sugar.对于糖尿病患者,医生告诫他们不要吃糖。
  • Diabetes is caused by a fault in the insulin production of the body.糖尿病是由体內胰岛素分泌失调引起的。
4 wavelength 8gHwn     
n.波长
参考例句:
  • The authorities were unable to jam this wavelength.当局无法干扰这一波长。
  • Radio One has broadcast on this wavelength for years.广播1台已经用这个波长广播多年了。
5 spectrum Trhy6     
n.谱,光谱,频谱;范围,幅度,系列
参考例句:
  • This is a kind of atomic spectrum.这是一种原子光谱。
  • We have known much of the constitution of the solar spectrum.关于太阳光谱的构成,我们已了解不少。
6 infrared dx0yp     
adj./n.红外线(的)
参考例句:
  • Infrared is widely used in industry and medical science.红外线广泛应用于工业和医学科学。
  • Infrared radiation has wavelengths longer than those of visible light.红外辐射的波长比可见光的波长长。
7 cone lYJyi     
n.圆锥体,圆锥形东西,球果
参考例句:
  • Saw-dust piled up in a great cone.锯屑堆积如山。
  • The police have sectioned off part of the road with traffic cone.警察用锥形路标把部分路面分隔开来。
8 cones 1928ec03844308f65ae62221b11e81e3     
n.(人眼)圆锥细胞;圆锥体( cone的名词复数 );球果;圆锥形东西;(盛冰淇淋的)锥形蛋卷筒
参考例句:
  • In the pines squirrels commonly chew off and drop entire cones. 松树上的松鼠通常咬掉和弄落整个球果。 来自辞典例句
  • Many children would rather eat ice cream from cones than from dishes. 许多小孩喜欢吃蛋卷冰淇淋胜过盘装冰淇淋。 来自辞典例句
9 plentiful r2izH     
adj.富裕的,丰富的
参考例句:
  • Their family has a plentiful harvest this year.他们家今年又丰收了。
  • Rainfall is plentiful in the area.这个地区雨量充足。
10 helping 2rGzDc     
n.食物的一份&adj.帮助人的,辅助的
参考例句:
  • The poor children regularly pony up for a second helping of my hamburger. 那些可怜的孩子们总是要求我把我的汉堡包再给他们一份。
  • By doing this, they may at times be helping to restore competition. 这样一来, 他在某些时候,有助于竞争的加强。
11 evolutionary Ctqz7m     
adj.进化的;演化的,演变的;[生]进化论的
参考例句:
  • Life has its own evolutionary process.生命有其自身的进化过程。
  • These are fascinating questions to be resolved by the evolutionary studies of plants.这些十分吸引人的问题将在研究植物进化过程中得以解决。
12 nurture K5sz3     
n.养育,照顾,教育;滋养,营养品;vt.养育,给与营养物,教养,扶持
参考例句:
  • The tree grows well in his nurture.在他的培育下这棵树长得很好。
  • The two sisters had received very different nurture.这俩个姊妹接受过极不同的教育。
13 millennia 3DHxf     
n.一千年,千禧年
参考例句:
  • For two millennia, exogamy was a major transgression for Jews. 两千年来,异族通婚一直是犹太人的一大禁忌。
  • In the course of millennia, the dinosaurs died out. 在几千年的时间里,恐龙逐渐死绝了。

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