From the latest UN data available, the Vision Impact Institute has estimated that there are 2.5bn people in the world who have poor vision, and no means of correcting it. That is not far short of the number of people who live in China, India and Japan, combined.
根据联合国(UN)现有最新数据，视力影响研究院(Vision Impact Institute)估计，manbetx app苹果 有25亿人患有未矫正的视力障碍问题。这个数字几乎相当于manbetx3.0 、印度和日本人口的总和。
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