Helpful guide to choosing the perfect glasses size
Choosing the perfect size of glasses is both a matter of style and a matter of comfort and functionality. Wearing glasses that are well tailored to one’s needs means avoiding discomfort such as headaches, eyestrain or marks on the face. The wrong size can compromise both aesthetics and the ability to see properly.
What factors to consider before choosing the perfect glasses size?
Before choosing glasses, it is important to consider several aspects.
Choosing an eyeglass size is a process that requires attention to details such as lens width, bridge size, and temple length. These parameters affect both the comfort, aesthetics, and functionality of the glasses.
By considering face shape, facial width and personal preference, it is possible to find a frame that fits your needs perfectly.
Let’s take a detailed look together at the factors to consider before choosing an eyeglass size.
Glasses measurements
Spectacles are composed of several parts, each of which has a specific size that needs to be considered.
When you choose these optical devices, you will find three basic measurements engraved on the inside of the rods:
- Lens Width (Eye Size): indicates the width of each lens and usually varies between 40 and 62 mm. This measurement determines how large or small the glasses will be on the face.
- Bridge Length (Bridge Size): is the space between the two lenses, that is, the part that rests on the nose. It usually varies between 14 and 24 mm. This measurement affects the comfort and stability of the glasses on the nose.
- Temple Length: is the total length of the temple from the hinge to the back of the ear. It generally varies between 120 and 150 mm. The correct length ensures that the glasses fit well on the head without slipping or squeezing too tightly.
These measurements are expressed, for example, as “52-18-140,” where 52 is the lens width, 18 is the length of the bridge, and 140 is the length of the rod.
Face measurements
To choose glasses that fit your face perfectly, it is important to Know your own facial width.
A good place to start is to measure the distance between the temples with a ruler or dressmaker’s tape measure.
Depending on the width of your face, you can choose a frame that fits in a balanced way:
- Narrow face: if your face width is less than 125 mm, you should opt for glasses with a lens width between 47 and 50 mm.
- Medium face: with a width between 125 and 130 mm, the ideal glasses will have a lens width between 50 and 53 mm.
- Wide face: with a width greater than 130 mm, choose glasses with a lens width between 54 and 58 mm.
- Oval face: can choose a wide variety of styles and sizes, as the harmonious proportion of the face allows almost any type of frame to be worn.
- Round face: to optically elongate the face, it is advisable to choose wider glasses with rectangular or angular shapes.
- Square face: round or oval frames can soften facial lines and balance pronounced angles.
- Heart-shaped face: thinner and lighter frames are ideal for balancing the wider upper part of the face.
Dimensions of the nasal bridge
The nasal bridge plays a key role in determining how comfortably the glasses rest on the nose.
If the bridge is too narrow, the glasses may tighten and leave marks on the skin; if too wide, they may slip continuously.
To figure out which bridge size is best for you follow these tips:
- Narrow nose bridge: If you have a narrow nose, choose glasses with a smaller bridge (14-18 mm) to ensure that they fit properly and do not slip.
- Wide nasal bridge: those with a wider nose may opt for an 18-24 mm bridge, which provides greater stability and comfort.
Some glasses have adjustable nose pads, which offer greater customization of the fit, especially for those with particularly small or large noses.
Rod length and its impact on comfort
The temples of the glasses should fit perfectly behind the ears without creating pressure or discomfort.
If the temples are too long, the glasses may slip forward, while temples that are too short may constrict the head and create discomfort.
To determine the correct length of the rods, measure the distance from the eye to the ear, also considering the curvature that must fit the ear.
Spectacles with adjustable temples, which can be shortened or lengthened slightly, are particularly useful for achieving an optimal fit.
Frame materials
In addition to the size, the frame material has a great impact on the overall comfort of eyewear. Choosing the right material is critical to achieving glasses that are lightweight, comfortable and fit your lifestyle.
Some of the most common materials that are used include:
- Lightweight and durable, metal is often used for thin, discreet glasses. It is ideal for those who want unobtrusive and lightweight eyewear, but it is important to check that the material does not cause allergic reactions, as is the case with nickel. Titanium is extremely lightweight and hypoallergenic and is one of the most comfortable materials for frames. It is ideal for people who wear glasses for many hours a day.
- Plastic (acetate). It is one of the most common and versatile materials, available in a wide range of colors and styles. Acetate is durable and relatively lightweight, but plastic frames tend to be thicker.
- An advanced plastic material known for its light weight, flexibility and impact resistance. It is popular for sports eyewear or for those who need a durable and comfortable frame.
Testing and adjusting eyeglasses: how to ensure a proper fit
After choosing glasses with the correct measurements, it is essential to try them on to make sure they fit perfectly.
If purchased in a physical store, staff can help you adjust the temples and nose pads to improve comfort.
When shopping online, it is important to choose stores that offer free returns or adjustments, as a small adjustment can make a big difference in comfort.
