A monocle is a type of vision aid, worn on one eye, instead of typical glasses, which cover both eyes with lenses. The monocle was often used from time to time to magnify small print, or to examine small details in items like jewelry. Many men and women in the upper classes sported a monocle as an elaborate fashion statement in the late 19th century.

The monocle might be made only of glass or might have glass with a metal frame. It usually was attached to a cord that was secured to clothing. This way the monocle could be used when needed, and left to dangle when it wasn’t required.

It might be hard to imagine how the monocle stayed in place. The early monocle fitted closely into the eye orbit, just below the brow, and just below the lower lid. This might, however, press on eyelashes. In the late 19th century the gallery monocle became popular. These were often custom made, and pushed the monocle lens away from the eye, though the frame of the gallery monocle still fit around the eye’s orbit.

The least expensive style of monocle was made in the early 20th century. This was frameless, and was cut to fit the person’s eye orbit. Another form of monocle, often employed by ladies was the quizzing glass. Instead of fitting into the eye orbit, this type of monocle was attached to a long handle. The quizzing glass could be held up to the eye when magnification was needed.

The monocle was especially associated with high fashion for men in the early 20th century. However, many fictional and real folk sported monocles long before they became a fashion trend. Perhaps the most famous depiction of the monocle is that worn by the illustrated gentleman on the first cover of The New Yorker. One can still see the monocle illustrated in iconic characters like Mr. Peanut, and Uncle Pennybags from the game Monopoly.

The monocle fell in fashion as ophthalmology became a more precise science, often detecting that both eyes needed some correction. Glasses became more popular, and were less likely to be dropped and smashed. Comic routines were frequently based on the dropping and breaking of a monocle if a person quickly changed their facial expression. There is some truth to the routine.

What is known is that monocles were not only fashionable, and practical, but also fairly comfortable. They might cause discomfort if they were not properly fitted to the eye. The poor man’s monocle, which was not fitted to the wearer, was usually purchased cheaply and thus might fall more frequently, or cause some squinting of the eye in order to keep the monocle in place.