Hank brings the answer into focus. Hosted by: Hank Green ---------- Support SciShow by becoming a patron on Patreon: www.patreon.com/scishow ---------- Dooblydoo thanks go to the following Patreon supporters—we couldn't make SciShow without them! Shout out to Kevin Bealer, Mark Terrio-Cameron, KatieMarie Magnone, Patrick Merrithew, Charles Southerland, Fatima Iqbal, Benny, Kyle Anderson, Tim Curwick, Scott Satovsky Jr, Philippe von Bergen, Bella Nash, Bryce Daifuku, Chris Peters, Patrick D. Ashmore, Charles George, Bader AlGhamdi ---------- Looking for SciShow elsewhere on the internet? Facebook: www.facebook.com/scishow Twitter: www.twitter.com/scishow Tumblr: scishow.tumblr.com Instagram: instagram.com/thescishow ---------- Sources: www.aao.org/eye-health/tips-prevention/five-vision-myths www.aoa.org/patients-and-public/eye-and-vision-problems/glossary-of-eye-and-vision-conditions/myopia?sso=y www.bbc.com/future/story/20140513-do-glasses-weaken-your-eyesight www.ncbi.nlm.nih.gov/pubmed/9243655 www.ncbi.nlm.nih.gov/pubmed/12445849 www.ncbi.nlm.nih.gov/pubmed/24674576 www.newscientist.com/article/dn3082-eye-correction-is-seriously-short-sighted/ www.ncbi.nlm.nih.gov/pmc/articles/PMC4087177/ www.mayoclinic.org/diseases-conditions/eyestrain/basics/treatment/con-20032649 hyperphysics.phy-astr.gsu.edu/hbase/vision/eyedef.html#c1

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