Glasses became common in the late 19th and early 20th centuries, driven by compulsory education, widespread literacy, and industrial manufacturing. While spectacles existed as far back as the 1300s, they remained expensive, specialized items for centuries. It took roughly 600 years from their invention for glasses to become something ordinary people wore every day.
The First Spectacles: 1300s Italy
The earliest spectacles appeared in Italy around the late 1200s and early 1300s. These were simple magnifying lenses set into frames that had to be held up to the eyes or balanced on the nose. They could only correct farsightedness, helping older readers see text up close. For the next several centuries, glasses were rare, handmade, and expensive. Most people who needed vision correction simply went without, and doctors often recommended exercises to “strengthen” the eye or even bloodletting rather than prescribing lenses.
Early Spread Beyond Europe
Glasses reached China between 1420 and 1430, initially arriving as tribute offerings or trade goods. Before 1567, only small quantities made it into the country through border commerce. After that year, maritime trade along China’s southeastern coast brought more pairs in, and local craftsmen began making their own. Usage picked up after the 1600s for reading glasses, while glasses for nearsightedness didn’t become popular in China until around 1691.
This pattern repeated across much of the world. Glasses trickled into new regions through trade routes, remained luxury or novelty items for decades, and only slowly filtered into broader use.
The Design That Changed Everything
For most of their history, spectacles had no way to stay on your face. You either held them up, pinched them onto your nose (like a pince-nez), or tied them around your head with a ribbon. In 1727, London optician Edward Scarlett developed the first frames with rigid side-arms, called “temples,” that hooked over the ears. This was the birth of glasses as we recognize them today.
Scarlett’s design made glasses far more practical. You could wear them while working, walking, or reading without using a hand to keep them in place. Still, even with this improvement, glasses in the 18th century remained specialized, often bespoke items in Britain and elsewhere. They were available, but hardly universal.
Benjamin Franklin’s Bifocals
In 1784, Benjamin Franklin patented the bifocal lens. His method was straightforward: he cut lenses from two different pairs of spectacles in half and combined the halves into a single frame. The top half corrected distance vision while the bottom half helped with reading. This eliminated the need to swap between two pairs of glasses, a genuine convenience for the growing number of people who needed correction at multiple distances.
The 19th Century Tipping Point
The 1800s created conditions that made glasses not just useful but necessary for millions of people. Reading for leisure became widespread. Trains and other fast transportation demanded sharp distance vision. Most importantly, compulsory education laws across Europe and North America meant that children and adults alike needed to see clearly to read books, chalkboards, and newspapers. For the first time, poor eyesight wasn’t just an inconvenience for scholars and monks. It was a barrier to participating in modern life.
In 1862, Dutch ophthalmologist Herman Snellen invented the letter chart that standardized how vision was measured, establishing 20/20 as the benchmark for normal sight. Before Snellen’s chart, prescribing the right lenses was largely guesswork. Standardized testing made it possible for opticians to reliably match people with the correct lenses, which in turn made glasses more effective and trustworthy in the public eye.
By the 1880s, glasses were clearly becoming mainstream. A British newspaper, the Preston Guardian, noted in 1884 that the fashion of wearing spectacles in Preston “has developed itself in an extraordinary manner.” Frames were available in tortoiseshell, steel, silver, and gold. Some people even wore frames with plain glass lenses purely as a fashion statement, and the single-lensed monocle had its own following.
Plastic Frames and True Mass Adoption
The first commercially available plastic frames hit the market in the 1910s and became common by the 1930s. Plastic was lighter, cheaper to produce, and easier to shape than metal or tortoiseshell, which made glasses more affordable and comfortable for everyday wear. This was the final barrier. Once manufacturing could produce frames inexpensively and in large quantities, glasses became accessible to virtually everyone who needed them.
The 20th century is when glasses fully arrived as both a functional tool and a fashion accessory. Frame materials continued to evolve, with engineered plastics eventually producing frames weighing as little as 4 grams. But the real transformation had already happened: by the early 1900s, wearing glasses had shifted from something unusual to something entirely ordinary.
Why It Took So Long
Several factors kept glasses from becoming common for centuries after their invention. Manufacturing was slow and artisanal, with each pair ground and assembled by hand. There was no standardized way to test vision or prescribe lenses until the 1860s. Medical professionals were often skeptical, preferring to treat eye problems with remedies rather than corrective lenses. And culturally, glasses carried a stigma in many societies, associated with physical weakness or old age rather than practical problem-solving.
Each of these barriers fell in sequence. Scarlett’s temples made glasses wearable. Franklin’s bifocals made them versatile. Snellen’s chart made prescriptions reliable. Industrial manufacturing made them affordable. And compulsory education made them necessary. The result was a shift that played out over roughly 50 years, from the mid-1800s to the early 1900s, turning spectacles from a niche product into one of the most widely used devices in human history.