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十三世纪中期，英国学者培根看到许多人因视力不好，不能看清书上的文字，就想发明一种工具来帮助人们提高视力。为此，他想了很多办法， 做了不少试验，但都没有成功。 　　一天雨后，培根来到花园散步，看到蜘蛛网上沾了不少雨珠，他发现透过雨珠看树叶，叶脉放大了不少，连树叶上细细的毛都能看得见。他看到这个现象，高兴极了。 培根立即跑回家中，翻箱倒柜，找到了一颗玻璃球。但透过玻璃球，看书上的文字，还是模糊不清。他又找来一块金刚石与锤子，将玻璃割出一块，拿着这块玻璃片靠近书一看，文字果然放大了。试验成功了，培根欣喜若狂。后来他又找来一块木片，挖出一个圆洞，将玻璃球片装上去，再安上一根柄， 便于手拿，这样人们阅读写字就方便多了。 　　这种镜片后来经过不断改进，成了现在人们戴的眼镜。光矫正视力的就有青少年用的近视镜与老年人戴的老花镜，还有其他各种用途的眼镜，人们学习、工作就更方便了。培根为人类的文明进步作出了贡献。
[编辑本段]眼镜的起源和发展
　　眼镜最早出现于1289年的意大利佛罗伦萨，据说是一位名叫阿尔马托的光学家和一位生活在比萨市的意大利人斯皮纳发明的。美国发明家本杰明富兰克林，身患近视和远视，1784年发明了远近视两用眼镜。1825年，英国天文学家乔治艾利发明了能矫正散光的眼镜。有人认为，中国人在2000年前就发明了眼镜。我国在明朝中期就出现了眼镜。明万历田艺蘅在《留青日札》卷二《叆叇》条云：“每看文章，目力昏倦，不辨细节，以此掩目，精神不散，笔画信明。中用绫绢联之，缚于脑后，人皆不识，举以问余。
10-11 Champions League group F match the first three group games to continue, the Blues Chelsea away to Spartak Moscow. After 90 minutes of fierce fighting, the ultimate blue away with Zhirkov and Chelsea Anelka scored first half of the 2-0 group stage win over Spartak Moscow to obtain 3-game winning streak, the game is the first Chelsea in the Champions League 50 victories, the war in Europe in the first 98 victoriesToulouse FC jerseys.

The two sides clash in the history of the record is not yet over, but Chelsea is no stranger to the Russian team, Chelsea's Russian owner Roman Abramovich is in the past few years, Chelsea is the player with the Russian team, whether the transactions between still have a lot of business outside the interaction. Team before the game two, brave performance Spartak Moscow, Marseille and has scored two straight victories Zilina only behind Chelsea on goal difference after a disadvantage, AJ Auxerre jerseysthe game will be the group's top war. More Champions League News>>

07-08 Champions League final, when the game is home at Spartan Stadium Nicky Lu date, the results Chelsea lost to Manchester United, here is the Blue commanders that sad place. But Ancelotti view, where Chelsea need to get up where fall. If the game away to Chelsea to win, and that this will be the 50th team in the history of Champions League victories, is also the first victory in World War 98 gamesMarseille jerseys.

Opening 4 minutes, was he denied Malouda pass, Kalou shot after stopping the chest the ball over the bar. 9 minutes, Spartak midfield steals attack, Paershifu Liu grams on the right break to the middle, go past a row over players pass, great shot restricted area on the left, the ball over the bar. 12 minutes, Spartak winger quick attack, pass from the left front of the ball, Martinez shot at close range, Cech denied the ball with their feet. Valenciennes FC jerseys14 minutes, then team-mate Malouda Zhisai running in the restricted area before the ball is in volley, the ball just wide door. The first 23 minutes, Chelsea broke away to lead, the Blues midfielder fast attack, Meikle long pass attack, the Spartans defender headed siege not far from the door Zhirkov 27 m at follow-up volley, the ball in the fall over in front of the goalkeeper's head suddenly fell into the door, 1-0. This is the first goal of the season ZhirkovParis Saint-Germain FC jerseys
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26 minutes, Anelka in Qiezhi Se Kalu, Kalu restricted area before the ball, Anelka closed line position low shot, the ball touching the column Chudi Xian. 29 minutes, the Spartans get a free kick opportunity front, Pa Leiya H-door direct free kick, the ball over the bar. 38 minutes, Chelsea great opportunity to get up front, Sparta defender return errors, Anelka stole the ball reached the restricted area, but unfortunately Tangqiu too large, Lyonnais jerseysthe ball fell to the ground is to attack the Dikan flutter a bit lost after break opportunities. 42 minutes, Chelsea will score expanded to 2-0. Essien the other defensive front after the break Zhisai, Anelka in the restricted area to adjust some of the first staggered, but then the French quickly adjust the pace of the ball passed back to the anti-buckle guard Tuishe the far corner, the ball through the Siba the lower right corner of the door straight into the goalkeeper. This is Nicolas Anelka in the Champions League this season's first two goals. End of the game the first half, Chelsea and Nicolas Anelka with Zhirkov goal being 2-0 SpartaBordeaux jerseys.

Ex situ battles both the second half, opening less than 1 minute, Sparta rapid transfer front, Ali restricted area before the long-range, the ball over the bar. 47 minutes, Chelsea counter-attack, restricted the right after the break Anelka volley, Dikan attack the ball closure. Spartans quickly organized back then, Tracy McGrady on the right after the break shot, the ball changed line after Petr Cech struggling to resolve. 49 minutes, Essien point errors, Spartak Fan Qiang, ball, shaking after the cross, Martinez shot higher. The first 50 minutes, rub the right Tracy McGrady shot closed the far corner, Cech poised to get the ball. After 1 minute, Chelsea counter-attack before the games, Suqi almost single-handedly mistakes are opportunities to Anelka. 57 minutes, the ball breaking to the front Terry door 30 meters away from the long-range wide. 60 minutes, after shaking volley before being closed by CechLe Mans UC jerseys.

63 minutes, in rapid succession before the games with Sparta, Ibsen volley outside the area, the ball was out of Cech single palm rest. After 1 minute, the Spartans left corner to the restricted area before the door McGrady outside the area 27 meters from the long-range, the ball again Cech resolved. 73 minutes, Chelsea missed the chance to lock the game, steal Xiadichuanzhong Kalu edge of the area, Michael Essien after the plug in the case of unguarded minor adjustment to low shot far corner, the ball rub column out. 73 minutes, Chelsea substitutions adjustment, Karen MacKay replaced Kalu. 80 minutes, Maikegaidi left Xiadichuanzhong, header Ali Road, Jack put the ball confiscated. Less than 20 seconds, the Spartans come back, Ali advancing the ball up front, long-range restricted area before the kick, the ball was confiscated by Cechcheap soccer jerseys.

The first 81 minutes, Chelsea substitutions adjustment, Ka Kuta replaced Florent Malouda. 84 minutes, Spartak Moscow substitutions adjustment, Anakin Niese replaced Ali. 87 minutes, Ashley - Cole, Petr Cech returns nearly mistakes. 86 minutes, Chelsea substitutions again adjusted replaced Ashley - Cole. 87 minutes, midfielder Diego Zhirkov foul a yellow card warning by the referee. Overall the final end of the game, the Blues Away With Zhirkov Chelsea and Anelka scored first half of the 2-0 group stage win over Spartak Moscow to obtain 3-game winning streak, the game is Chelsea in the Champions League's first 50 victory, the war in Europe in the first 98 victorieswholesale soccer jerseys余曰：此叆叇也。”这时的叆叇即最初的叫法。 　　我国早期眼镜的图像及实物资料存世不多。中国历史博物馆藏明画《南都繁会景物图卷》（描绘明永乐年间南京城区民众生活场景）中有一老者戴着眼镜。而清代赵翼称眼镜传入中国是在明朝宣德年间。清嘉庆年间眼镜已经得到普及，张子秋在《续都门竹枝词》云：“近视人人戴眼镜，铺中深浅制分明。更饶养目轻犹巧，争买皆由属后生。”清李光庭所著《乡言解颐》记载，我国古代眼镜根据子丑寅卯十二地支来划分深浅标度。 　　自13世纪人类发明镜片以来，一直用水晶玻璃磨制镜片，中国采用除采用水晶外，并且使用人造水晶。后来使用玻璃镜片。1937年法国发明了一种叫压克力的塑料眼镜片，虽不易破碎，但清晰度差。1954年法国依视路公司一位工程师从制作飞机座舱的材料中受到启发，从而发明了树脂镜片，自此以后，这种镜片便成为世界镜片王国的至尊，一直沿用到今天。