Hank brings the answer into focus. Hosted by: Hank Green ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Dooblydoo thanks go to the...
========== If you’re a four-eyes like me, you may have
heard that wearing glasses will ruin your eyesight.Over time, the thinking goes, the eye muscles
that stretch the lens of your eye aren’tworked out as much, so they get weaker, and
you keep needing stronger and stronger prescriptionsto see clearly.But the idea that glasses hurt your vision
is a myth.Because … that’s not really how glasses
work.Most vision problems occur because the eyeball
is either too long or too short, causing thecornea and lens to bend, or refract, light
either too far in front of or behind the retina,giving you blurry vision.If your eyeball is too long, and light is
focused in front of the retina, you’re nearsighted,or myopic, and you can see things up close
but struggle with things in the distance...
