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。

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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。

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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。

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Look away from the screen about every 20 minutes and stare at a distant object for several seconds to relax your eye's focusing muscles.

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Starz is definitely keeping an eye on this promotion, focusing on return visitors and overall impressions of the different parts of the application.

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It may not quite do that - but the live demo of the new translation service looked very clever, as did the standout eye-tracking feature which enables you to pause a video by simply looking away, then restart it by focusing on the screen again.

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