Which historic optical invention, generally credited to Italian craftsmen around the 13th century, fundamentally improved literacy rates and extended the working lifespan of scholars and artisans by correcting farsightedness?

💡 Explanation:

Eyeglasses, or spectacles, are widely believed to have been invented in Northern Italy around the late 13th century. This simple invention dramatically improved the quality of life for the elderly and those with vision problems, allowing them to continue reading and performing fine craftwork.