The plane allows medical workers to perform vision screenings and operations around the world.

有飞机是因为可以方便医疗人员在世界各地进行视力检查和手术。

And since 2001 Singapore has funded public education promoting time outdoors… and conducted annual vision screenings at schools.

自 2001 年以来，新加坡资助公共教育，推广户外活动，并在学校进行年度视力检查。

The Half Helen Foundation is the work of a CNN Hero to give free hearing and vision screenings to kids at school.

Half Helen基金会成为了我们的“CNN英雄”，它为学校里的孩子们提供免费的听力和视力检查。