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  Home >> News & Events >> How to measure the PD size?
How to measure the PD size?

Author:David Yergoph  From:http://www.aliexpress.com/store/300179  Date:2015/5/28

http://www.brighteyewear.com/pic/201505/2810820.jpg


For PD: (pupil distance, the distance from the centre of left eye to the centre of right eye)
 
How to measure the PD size?
Please visit this link: http://res.ebdcdn.com/video/science/how-to-measure-pd.mp4

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