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人们往往把爱护眼睛一样作为重视某一事情的最高尺度。说明视力是人最可珍爱的东西。医学对近视、远视以及散光等曲光不正的矫正有了很大进展。各种眼镜为无数人群提高了视力。检查视力是否正常的标准是100多年前提出的Snellen视力检查图。在20英尺距离能够看到最上面一行字,就是最佳视力,记为20/20。能够看清的字符图形越往下,视力就越低。记录为20/40、20/200等等。对于视力已经最佳的人,是否可以通过治疗进一步提高视力?这是目前眼科学研究的一个热点。对一些竞技体育项目,例如射击、射箭,高尔夫球、乒乓球、I篮球、排球、击剑、羽毛球等,高人一等的视力会占据很大优势。从Web上可以发现有关超等视力(Super Vision)的许多新闻、研究、技术和设备。即使视力正常的人也可以进一步提高视力。眼科学的目标是使视力达到20/15、20/10甚至20/5。对于20/5的视力而言,看20英尺距离的物体的清晰度相当于5英尺,相当于通常的4.0视力。目前视力的矫正是针对视力低下者,不久以后增强视力也将针对视力正常者,这不是新世纪出现的一个新的医学景观吗?
People tend to take the same care of the eyes as the highest measure of a matter. Description of vision is one of the most cherished things. Good medicine for myopia, hyperopia and astigmatism correction has made great progress. A variety of glasses for countless people improve their eyesight. The standard for checking for visual acuity is the Snellen visual acuity test that was presented more than 100 years ago. At 20 feet, you can see the top line of words, which is the best visual acuity, recorded as 20/20. Be able to see the character graphics more down, the lower the visual acuity. Record as 20/40, 20/200, and so on. For people who have the best eyesight, can further improve their vision through treatment? This is currently a hot research ophthalmology. For some competitive sports such as shooting, archery, golf, table tennis, I basketball, volleyball, fencing, badminton, etc., a superior vision will occupy a great advantage. Many of the news, research, technology and equipment about Super Vision can be found on the Web. Even people with normal vision can further improve their vision. The goal of ophthalmology is to bring vision to 20/15, 20/10, or even 20/5. For a 20/5 vision, the resolution of an object looking at 20 feet corresponds to 5 feet, which corresponds to the usual 4.0 eyesight. At present, vision correction is aimed at those with poor eyesight. In the near future, vision enhancement will also be aimed at those with normal vision. Is not this a new medical landscape emerging in the new century?