Benjamin Franklin was around 78 years old when he invented bifocals in the year 1784. This innovative eyewear was designed to address his own vision problems, which many people experience as they age.
Franklin’s invention cleverly combined two different prescriptions in one lens, allowing him to see both near and far without having to switch glasses. This practical solution not only improved his quality of life but also paved the way for modern bifocal lenses that many people use today.