Choosing Glasses Frames for Your Face Shape: A Practical Guide

Choosing new glasses is part medical decision and part style decision. The lenses correct your vision, but the frame determines how comfortable the glasses feel, how well the lenses sit in front of your eyes, and how you feel when you look in the mirror. Because you will probably wear your glasses for several hours a day for a year or more, it is worth getting both parts right.

Face-shape rules are a useful starting point, not a strict law. This guide explains the common face shapes and the contrast principle behind most style advice, then moves on to the parts that are often overlooked: frame size, bridge fit, temple length and how your prescription should influence your choice. If you are unsure of your face shape, try our face shape tool before you shop.

Identifying your face shape

To identify your face shape, pull your hair back, look straight into a mirror and compare four things: the width of your forehead, the width of your cheekbones, the width of your jaw and the length of your face from hairline to chin. Many faces are a mixture of two shapes, so look for the closest match rather than a perfect fit.

The contrast principle

The idea behind most face-shape advice is simple: contrast creates balance. Angular frames add structure to a soft, round face; round or oval frames soften a strongly angular jaw. Frames that are slightly wider at the top draw the eye upwards and can balance a narrow forehead, while bottom-heavy frames can balance a broad forehead.

A few related rules are worth knowing:

• Scale: frame size should be in proportion to your face. Small features can be overwhelmed by thick, oversized frames; large features can make tiny frames look out of place.
• Brow line: the top of the frame should ideally follow the line of your eyebrows, neither hiding them entirely nor sitting far below them.
• Colour contrast: high-contrast frames, such as black on fair skin, make a strong statement. Lower-contrast colours, such as tortoiseshell, warm metals or translucent tones, look softer. Consider your skin undertone, hair and eye colour.
• Personality and use: a frame for work, sport or reading may need to be different from the pair you wear for social occasions.

Understanding frame measurements

Most frames have three numbers printed on the inside of one temple arm, for example 52-18-140. These are measured in millimetres:

• Lens width (eye size): the horizontal width of each lens, here 52 mm. Typical adult sizes range from the mid-40s to the high-50s.
• Bridge width: the distance between the lenses, here 18 mm. It needs to match the width of your nose.
• Temple length: the length of the arm from hinge to tip, here 140 mm. Common lengths range from about 135 to 150 mm.

If you already own glasses that fit you well, note their numbers. They make an excellent reference for buying a new pair, especially online. Our frame guide explains sizing in more depth.

How a well-fitting frame should feel

Width

The total frame width should be roughly the same as the width of your face at the temples. You should not see a large gap between the arms and the side of your head, and the arms should not press into your temples. As a general guide, your eyes should sit close to the horizontal centre of each lens, which is linked to your pupillary distance.

Bridge

The bridge carries much of the weight of the glasses. A bridge that is too narrow pinches and pushes the frame up; one that is too wide lets the glasses slide down your nose. People with a low or flat nose bridge, common in many East Asian and some African faces, often find frames with adjustable nose pads or specific low-bridge (Asian fit) designs much more comfortable, as these keep the lenses from resting on the cheeks.

Temples

The arms should run straight back to the ears and bend down just behind them, holding the glasses in place without pressure. Arms that are too short pull the frame backwards and press on the ears; arms that are too long allow slipping. Opticians can usually adjust the bend of metal and many acetate temples for a precise fit.

Position on the face

• Your eyebrows should be visible, ideally just above the top rim.
• The frame should not touch your cheeks when you smile.
• Your eyelashes should not brush the lenses.
• The glasses should stay put when you look down or nod your head.

How your prescription affects your choice

This is where many people make costly mistakes. The same frame that looks perfect with clear demo lenses can look and perform very differently once your lenses are fitted. Understanding your prescription helps.

High myopia (strong minus lenses)

Minus lenses are thin in the centre and thick at the edges. The larger the frame, and the further your eyes are from the centre of each lens, the thicker the edges become. To keep them manageable:

• Choose smaller, rounder or oval frames with a modest lens width.
• Pick a frame whose lens centres match your pupil positions, so the lenses do not need to be decentred.
• Prefer full-rim frames, especially thicker acetate, which hide edge thickness better than rimless or semi-rimless styles.
• Ask about high-index materials, which reduce thickness. See our guide to lens materials and index.
• An anti-reflective coating reduces the visible rings at the edge of strong minus lenses.

High hyperopia (strong plus lenses)

Plus lenses are thick in the centre and magnify the eyes. Smaller frames allow the lenses to be made thinner and lighter, and aspheric designs reduce bulging and magnification.

Astigmatism

Strong astigmatism can make very large or very curved (wraparound) frames uncomfortable, because the distortion increases towards the edges. Moderate, flatter frames generally give the most natural vision.

Progressive and bifocal lenses

Multifocal lenses need enough vertical height for the distance, intermediate and reading zones. Very shallow frames may cut off much of the reading area. Many progressive designs need a minimum fitting height, often somewhere around the high teens to low 20s in millimetres, depending on the lens. Ask your optician before you fall in love with a narrow frame. Our article on getting used to progressive lenses explains why this matters.

Materials and practical considerations

• Acetate: wide range of colours, warm feel, strong rims for thick lenses; can be heavier.
• Metal (stainless steel, titanium): thin and light; titanium is strong and suits people with nickel sensitivity.
• Rimless and semi-rimless: very light and discreet, but less suitable for thick lenses and need gentle handling.
• Flexible materials: useful for children and active adults.

Also consider weight for all-day wear, how the frame works with a face mask or hat, whether you need a separate pair for sport, and whether you would benefit from sunglasses in your prescription.

Shopping tips

1. Know your face shape and the measurements of your current glasses before you start.
2. Try frames on in natural light, and take photos from the front and side.
3. Bring someone honest, or ask the optician for an opinion.
4. Tell the optician about your prescription before choosing so they can steer you away from frames that will not work with your lenses.
5. When buying online, use the measurements of a well-fitting pair and an accurate pupillary distance.
6. Have your glasses adjusted by an optician after purchase; small adjustments make a big difference to comfort.

When to see an optician or doctor

A new frame should feel comfortable within a day or two. Return to your optician if:

• The frame leaves red marks, pain or sores on your nose or behind your ears.
• Your glasses keep slipping or sit crooked.
• You get headaches, eye strain or dizziness with your new glasses that do not settle within a week or two.
• Your vision seems less clear than with your old pair; the lens centring or prescription may need checking.

Seek medical advice promptly if you notice a sudden change in vision, double vision, eye pain or flashes and floaters. These are not caused by frames and need an eye examination. Otherwise, take your time, enjoy the process, and choose a frame that serves your eyes as well as your style.