今年事件的主题为低视力和屈光不正，提醒注意数亿只是因为需要眼镜而功能性失明的人。
The theme of this year's event, low vision and refractive error, draws attention to the hundreds of millions of people who are functionally blind simply because they need spectacles.
拉梅什·拉斯卡尔：世界卫生组织推测，全球有5亿多人因患屈光不正而影响到日常生活。
Ramesh Raskar: the World Health Organization estimates that over half a billion people have uncorrected refractive error, which is affecting their daily livelihood.
该电站将从太阳光产生10亿瓦特的电量，然后通过光的方式传送到地面接收站，可供30万家庭使用。
The station will generate 1 gigawatt of power from sunlight and beam the energy down to a receiving station where it can be used to power almost 300, 000 homes.
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