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How to See Without Glasses - YouTube - 1 views

www.youtube.com/watch

glasses youtube seeing lenses focusing

shared by Jo McGrouther on 04 May 14 - No Cached

Inquiring Minds : What ACTUALLY causes SHORT-SIGHTEDNESS?? - YouTube - 2 views

www.youtube.com/watch

light seeing glasses eye_defects short-sightedness youtube

shared by Jo McGrouther on 24 Feb 12 - No Cached

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