Using the information obtained from these tests, along with the results of other tests of eye focusing and eye teaming, your optometrist can determine if you have nearsightedness.
验光师会通过检测收集这些数据以及眼聚光和眼分组测试的结果来判断你是患有近视。
These products use the existing eye muscles to change the shape of the lens and move it backwards and forwards in the eye during focusing.
这些产品使用现有的眼睛肌肉去改变晶体的形状，在眼睛聚焦的过程中使它向前和向后移动。
Focusing on a computer screen for too long can lead to dry eyes and eye fatigue.
聚焦在电脑屏幕上停留太久会导致眼睛干涩和眼部疲劳。
That means that the eye is somewhat shorter than ideal, causing the eye to exert focusing effort at ALL distances in order to see clearly.
意思是视力比理想的近一些，为了看得更清楚，眼睛尽力调焦到所有的远处物体。
An irregular shaped cornea or lens prevents light from focusing properly on the retina, the light sensitive surface at the back of the eye.
形状不规则的角膜或晶状体会使光线无法在视网膜——眼球背面的感光膜上准确地聚焦。
In addition to eye surgery to treat focusing problems, excimer lasers have other health-related applications.
除眼袋手术来治疗重点问题，准分子激光器有其他与健康相关的应用程序。
Think of the eye as a camera: it has two structures responsible for focusing light, the cornea and the lens.
试想像，我们的眼球犹如一部照相机，内有两个结构，用以聚焦光线，即角膜和晶体。
An optometrist can prescribe eyeglasses or contact lenses that correct nearsightedness by bending the visual images that enter the eyes, focusing the images correctly at the back of the eye.
验光师为矫正近视患者的视力所配的眼镜或隐形眼镜能够使光线在进入眼球之前发生折射从而准确地聚焦在眼球背面的视网膜上。
The majority of eye experts believed it was unlikely to do any permanent damage, but it might make you squint, blink more and have trouble focusing, the researchers said.
这两位研究者说，大多数眼科专家认这样不会造成永久性伤害，但会让你更频繁地眯眼和眨眼，并使眼睛难以聚焦。
It's thought sunshine interferes with the delicate development of the eye - making focusing difficult and distant objects appear blurred.
研究人员认为阳光和眼睛的发育密不可分，它让眼睛聚焦变难，看远处的物体也比较模糊。
The doctor may choose to use an automated instrument that automatically evaluates the focusing power of the eye.
医生会使用一种自动化的仪器来检测出眼球聚焦光线的能力。
When study subjects returned to the real world, they had trouble with visual focusing, tracking images and hand-eye coordination.
当研究受试者返回现实世界时，他们在视觉聚焦、图像跟踪和手眼协调等方面都出现了问题。
In some cases, such as for patients who can't respond verbally, or when some of the eye's focusing power may be hidden, eye drops may be used.
但有些情况下，比如患者不能口述或者当患者存在眼调节能力的时候，就必须使用眼药水来扩瞳验光了。
Rachel Bishop added. She is chief of consulting services at the National Institutes of Health in Washington. "It is surface dryness and is eye strain from focusing."
美国眼科协会的迈克尔·杜恩纳斯医生说：“这种病症能导致疲劳、头疼、颈部疼痛、视觉重影，以及间歇性视觉模糊。”
Rachel Bishop added. She is chief of consulting services at the National Institutes of Health in Washington. "It is surface dryness and is eye strain from focusing."
美国眼科协会的迈克尔·杜恩纳斯医生说：“这种病症能导致疲劳、头疼、颈部疼痛、视觉重影，以及间歇性视觉模糊。”
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