The Eye Care Blog眼科護理博客

Approximately 14 million Americans over the age of 12 suffer from visual impairment, according to the National Health and Nutrition Examination Survey (NHANES).大約14萬美國人12歲以上的患有視力障礙，根據國家健康和營養檢查調查（ （ NHANES ） ） 。 The most common forms are the refractive disorders myopia and hyperopia.最常見的形式是近視屈光疾病和遠視。

Myopia (nearsightedness) is a condition in which distant objects are out of focus.近視（遠視）是一個條件，其中對遙遠的物體是出於關注的焦點。 It happens when the eyeball is too long or when the outer layer of the eye, the cornea, has too much curvature.它時會發生眼球過長，或當外層的眼睛，眼角膜，太多的曲率。 This causes the light rays to focus at a point in front of the retina instead of directly on it.這會導致光線集中在一個點在前面的視網膜上而不是直接對。

Hyperopia (farsightedness) is the opposite problem: Close objects are out of focus.遠視（遠視）是相反的問題：近處的物體是出於關注的焦點。 Here, the problem is that the eyeball is too short or the cornea has too little curvature.在這裡，問題是，眼球是太短，或角膜已太少曲率。 The light rays therefore focus behind the retina.光線的焦點，因此背後的視網膜。

Current treatments for myopia and hyperopia include several that are widely used as well as those targeted for unusual cases.目前治療近視和遠視包括幾個被廣泛採用，以及那些針對不同尋常的案件。 In addition, some new techniques are under development:此外，一些新技術正在發展：

· Corrective lenses such as contacts or glasses.矯正用的鏡片，如接觸或眼鏡。

· Laser-related surgery such as Lasik, or PRK (photorefractive keratectomy),激光有關的手術，如LASIK術後，或PRK治療（屈光性角膜切削術） ，

· Orthokeratology, a nonsurgical method using special rigid contact lenses that flatten the eye while you sleep.角膜塑型術，非手術方法，使用特殊的剛性接觸鏡片扁平的眼睛，而你的睡眠。

· Clear lens extraction is a surgical procedure in which the lens in the eye is removed and an artificial lens is inserted.明確鏡頭的提取是一種外科手術程序，在其中的鏡頭，眼睛是刪除和一人工晶體插入。

· Phakic intraocular lens treatment involves inserting an implant into the eye while leaving the natural lens in place. phakic眼內晶體的治療涉及插入一個植入的眼睛，而離開自然的鏡頭。

Researchers are also looking at ways of slowing the progression of myopia, especially among children:研究人員也正在研究方法，減緩近視的進展，特別是在兒童中：

· Bifocal glasses have been shown to slow the worsening of nearsightedness.雙部位眼鏡已顯示緩慢惡化，近視的。

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This entry was posted on Thursday, September 14th, 2006 at 9:59 am and is filed under 此項目被張貼在週四， 2006年9月14日在上午09時59分，並提交下 Bifocals bifocals , ， Contact Lens 接觸鏡 , ， Dry Eyes 幹眼 , ， Eye Treatment 眼科治療 , ， Glaucoma 青光眼 , ， Hyperopia 遠視 , ， Lasik Eye Surgery LASIK治療眼科手術 . 。 You can follow any responses to this entry through the 您可以按照任何的反應，此項目通過 RSS 2.0 2.0 feed. 餵養。 You can 您可以 leave a response 留下的回應 , or ，或 trackback Trackback跟踪 from your own site. 從你自己的網站。