It occurs when the eye cannot clearly focus the images from the outside world. The result of refractive errors is blurred vision, which is sometimes so severe that it causes visual impairment.

屈光不正是一种非常常见的眼部疾病，使眼睛无法对外界物体清晰地聚焦，而导致视力模糊，严重的时候可以引起视力损害。

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When the cornea curves or flattens unevenly, the result is astigmatism, which disrupts focus of near and distant vision.

散光是当角膜变弯或者变平时表面不平坦，影响视近、视远时的聚焦。

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Pros habitually focus on the present while creating their ultimate vision for, and landscape of, the future.

当设计他们未来的终极愿景，建立起未来的摩天大楼时，大师们习惯性的关注当前的事情。

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Marty has decades of experience in the staffing and funding, including starting a company of his own with a focus not too different from the vision of Opportunity Works.

FORBES: Living On The Edge

Of course, the Swedes' focus on enlargement is not simply a function of the breadth of their European vision.

ECONOMIST: Charlemagne

And, if you think of other great organizations that you know, perhaps Pixar, Toyota, Ritz-Carlton or Dell when it was on its great run, what you see is the same thing: an absolute focus on the vision, and reinforcement across all of the managerial choices.

FORBES: Samsung's OEM Genes