TED-Ed: How do glasses help us see? - Andrew Bastawrous and Clare Gilbert

The video explores the concept of refraction and its significance in vision. It explains how refractive errors like myopia, hyperopia, astigmatism, and presbyopia affect vision. The video discusses how these errors can be corrected using glasses, contact lenses, or laser surgery. It also covers the history and evolution of glasses, highlighting their development from early designs to modern, personalized eyewear.

What is the principle that allows glasses to help people with poor vision?

Explain the difference between myopia and hyperopia.

What challenges do our eyes face as we age?

Describe how glasses work to correct vision.

What advancements have been made in the design of glasses since their inception?