How Did Ancient Humans Survive Without Glasses?

For 300,000 years, there were no glasses. No contact lenses. No eye doctors. So how did your ancestors survive with blurry eyes... and lions around? In this video, you follow the clues from an Inuit town at the top of the world, to a school experiment in China, to a Roman writer who stumbled onto the first magnifier. You'll discover why most ancient humans never needed glasses at all, why "old eyes" hit almost everyone after 40, and why half the world may be nearsighted by 2050. The answer has to do with something you are probably doing right now. If this changed how you see your own eyes, leave a like, tell us in the comments how many hours you spend outside each day, and subscribe for more stories about the ancient instincts behind modern life. Sources: Holden et al., 2016, Ophthalmology (half the world nearsighted by 2050): https://www.sciencedaily.com/releases... Young et al., 1969 (Inuit families, Barrow, Alaska): https://pubmed.ncbi.nlm.nih.gov/5258732/ Rise of nearsightedness in the Arctic: https://ri.conicet.gov.ar/handle/1133... He et al., 2015, JAMA (outdoor time trial, Guangzhou): https://openresearch-repository.anu.e... Outdoor light vs indoor light: https://www.aop.org.uk/ot/features/20... Presbyopia ("old eyes"): https://www.health.harvard.edu/stayin... Seneca's water-filled glass globe: https://dictionary.obspm.fr/terms/bur... Giordano da Pisa and the first eyeglasses: https://www.cabinet.ox.ac.uk/node/6723 #history #humanevolution #anthropology #ancienthumans #ancienthistory #eyesight #myopia #nearsighted #glasses #historyofglasses #evolution #hunter #huntergatherers #psychology #science #eyes #screentime #outdoors #inuit #presbyopia #stickman #doodleanimation #explained