The protagonist of the movie Full Metal Jacket in the classic Panto frame

The Panto style of frames was developed by the military for myopic soldiers to wear under gas masks. The rounded shape of these goggles creates an optimal viewing area, and the high attachment of the temples to the frame does not block the eyes from the side, which is important when you work with your comrades scanning the landscape for enemy fire. Later, the civilianization of Panto in universities cemented their association with the classic academic look. Interestingly, there is another name for this style of frames in the United States, namely P3. The letter “P” stands for Pantoscopic, which refers to the inclination of the lower part of the frame towards the eye. And the number 3 means a difference of 3 mm between the height and width of the lenses – this difference distinguishes them from round glasses. Traditionally, if the width of the lens is 45mm, the height of the lens will be 42mm, respectively.