Complete Guide
Choosing Eyeglass Frames
Complete Guide
Face shape, material, sizing and fit — choosing a frame is about more than looks; it also decides whether your lenses can perform. Optometrist YoYo explains it from aesthetics to optics, all in one place.
- ✦The order of choosing: filter for "fit" first (width aligned to your face, nose pads snug, height enough for your lens needs), then pick the "good-looking" ones from among those that fit.
- ✦Matching a frame to a face usually works better by "contrast" than by "similarity": a round face suits an angular frame to sharpen the outline, a square face suits a rounder frame to soften the lines.
- ✦Material decides weight, adjustability and allergy risk: acetate has design appeal, pure titanium is light and low-allergy, metal is sleek and affordable, TR90 is impact-resistant and flexible.
- ✦A frame is a carrier for the lens: high myopia needs a small frame, progressives need enough frame height, and personalized custom lenses need the frame curve and pantoscopic tilt confirmed first.
Matching a frame to your face: the contrast principle
The core idea in one line: a frame's lines usually look better "contrasting" with your face shape than "matching" it. A rounder face suits a slightly angular frame to sharpen the outline; a squarer face suits a rounder frame to soften the lines.
| Face shape | Recommended frames | Avoid |
|---|---|---|
| Round | Square, Wellington, angular frames — draw out the outline | Small round frames (reinforce roundness) |
| Square | Round, oval, thin metal frames — soften the jawline | Heavy square frames (reinforce angles) |
| Long | Taller frames, decorated temples — visually shorten the face | Overly flat narrow frames |
| Heart (wide forehead, pointed chin) | Frames wider at the bottom, rimless/thin frames — balance top and bottom | Thick frames heavy along the top edge |
| Oval | Most frame shapes suit; choose by facial proportion | Frames too large or too small that throw off balance |
Full face-shape selection principles: How to choose an eyeglass frame for your face shape: round, square and oval faces
How to choose material: the trade-offs of weight, durability and allergy
Material decides weight, adjustability and allergy risk — for people who wear glasses long hours, this affects the experience more than looks.
Acetate
Rich colour and texture, fine feel, adjustable curve — the mainstream for design pieces. Medium weight, with presence in thicker frames.
Pure Titanium / β-Titanium
Extremely light, corrosion-resistant, low-allergy — suited to long wear and strong prescriptions (heavy lenses). Higher price, the top choice for the high end.
Metal (stainless steel / Monel)
Fine and sleek, affordable, malleable and easy to adjust. Some contain nickel, so sensitive skin should take note.
TR90 Plastic-Steel
Light, flexible, impact-resistant — good for sport and children. Less adjustable, with a more casual feel.
Full material comparison table: How to choose eyeglass frame material? A full comparison of acetate, metal, titanium and TR90
Sizing and fit: slipping and pinching are both size problems
You'll often see a set of numbers on the inside of the temple, for example 52□18-140: lens width 52 mm, bridge width 18 mm, temple length 140 mm. Understanding it keeps you from mistakes when buying online or changing frames.
Three tests of fit: the total frame width aligns with your face width without extending past the temples; the bridge or nose pads sit stably and snugly, neither pressing nor slipping; the temple length curves naturally behind the ear, neither pinching nor loose.
And frame fit isn't just about comfort — a crooked frame or the wrong size shifts the lens's optical centre away from your pupils, directly affecting clarity, which is especially pronounced with progressives and strong prescriptions.
Read the size markings and fit principles: Glasses slipping or pinching? A full breakdown of frame sizing and fit
The hidden key to choosing a frame: the frame serves the lens
This is something an optical shop won't necessarily tell you, but an optometrist always thinks of first — the frame isn't just an accessory, it's the carrier for the lens.
High myopia needs a small frame →
The shorter the frame is edge-to-edge, the thinner and lighter the lens edge; a frame centre distance close to your PD reduces the prism effect
Progressives need enough height →
Insufficient frame height cuts off the near zone, leaving you unable to find the clear reading position
Frame curve affects custom lenses →
Personalized custom lenses factor in the frame's pantoscopic tilt and curve, so these must be confirmed when choosing the frame
Fit precision affects the optical centre →
Only with the frame sitting straight and the nose pads and temples adjusted does the lens's optical centre land in the correct position over the pupils
Read more: articles on frames
How to Choose Glasses Frames for Your Face Shape: Round, Square, and Oval Faces | Beyond Visual Optometry
There's no single 'right' frame for your face shape — but there are principles. Master contrast, proportion, and face width, and you'll know exactly what you're looking for (and why) when you try frames on in person at our Xinzhuang or Banqiao store.
FramesChoosing Glasses Frame Material: Acetate, Metal, Titanium & TR90 Compared | Beyond Visual Optometry
Choosing a frame material isn't just about looks — weight, allergies, and adjustability all matter, especially with your face and prescription. Here's a complete breakdown of acetate, metal, pure titanium, and TR90, all available to try on and compare in person at our Xinzhuang and Banqiao stores.
FramesWhy Do My Glasses Slide Down or Pinch? A Complete Guide to Frame Size and Fit | Beyond Visual Optometry
Glasses that slide down or pinch your temples usually aren't a 'face problem' — they're a frame-size problem. This guide teaches you to read the numbers printed on your temple arm and judge whether a frame actually fits, with real measurements available at our Xinzhuang and Banqiao stores.
FramesYour Glasses Aren't Really Fitted Until They're Adjusted — 8 Key Steps in Hand Frame Adjustment
Getting the prescription right doesn't mean your glasses are properly fitted. Half of whether a pair of glasses feels comfortable comes down to frame adjustment — a step most optical shops do far less thoroughly than you'd expect.
FramesMINAMOTO: A Handcrafted Pure Titanium Eyewear Brand from Sabae, Japan | Beyond Visual Optometry Xinzhuang
Born in Sabae, Japan's legendary eyewear town — Japanese pure titanium construction, screwless design, and a handmade washi paper case. MINAMOTO is a brand made for people who appreciate detail.
Frequently Asked Questions
Q: When choosing a frame, should I go for looks first or fit first?
Both, but the order matters: filter for "fit" first, then pick the "good-looking" ones from within the ones that fit. Fit means the frame width aligns with your face width, the bridge and nose pads sit snugly, and the frame height is tall enough for your lens needs (progressives in particular need enough height). However good-looking a frame is, if the size is wrong it will slip, pinch and misalign the optical centre, and end up in a drawer. In practice we first pick out a few frames that suit your face shape and lens needs, and then you choose the style you like from those.
Q: Can I buy a frame online and take it to an optical shop for lenses?
Technically yes, but there are a few risks to know first: online frames don't let you check the real size or feel, and it's common to end up with one too big or too small; material and hinge quality vary, and a frame that warps later may not be adjustable; and high-power or progressive lenses have requirements on the frame's size, curve and height, so the wrong frame directly affects lens performance. We do accept customer-supplied frames for fitting, but we first check whether the frame suits your prescription and lens design, to avoid finding out it doesn't work only after the lenses are in.
Q: How long does a good frame last?
It depends on material and care, but 2–5 years or more is usually no problem. Pure titanium and quality acetate are highly durable; the hinges and temples are the main wear points. The real time to replace often isn't that the frame broke, but that the prescription changed significantly, or the frame has deformed and can no longer be adjusted back to the correct wearing position. Regular free adjustments at the store (nose pads, temple tension, level alignment) noticeably extend a frame's lifespan and wearing comfort.
Q: For high myopia or a progressive lens, what should I watch for when choosing a frame?
For high myopia (a strong prescription) we suggest a smaller frame with a short edge-to-edge width, which effectively reduces the lens edge thickness and weight; the frame centre distance (the frame's optical centre) should sit as close to your PD as possible to avoid a prism effect. Progressives are the opposite: they need "enough frame height" to hold the full far, intermediate and near zones — a frame that's too flat cuts off the near zone and leaves you unable to find the clear reading position. These should all be considered when choosing the frame, not discovered after the lenses are made. At the Xinzhuang and Banqiao stores, Optometrist YoYo can help you choose a frame based on your prescription and lens design.
Choosing a frame? Come and try them on in store
Whether a frame fits is most accurate once it's on your face. At both the Xinzhuang and Banqiao stores, Optometrist YoYo helps you choose based on your face shape, prescription and lens needs — not pushing the most expensive one on you, but finding the pair most suited to you.
Book an In-Store Fitting →