CAR21
£ 39
A unisex oval frame in bronze or gold.
- Size: 48-18-135 mm, lens depth 34 mm
- Colours: Bronze, Gold
- Case & microfibre cloth included
- Lenses made in our UK labs
- Free delivery
- Free 30-day returns
About the Carlton CAR21
CAR21 Prescription Glasses
An oval frame softens strong features and keeps the look light. The CAR21 is a unisex full-rim metal oval frame, sized 48-18-135, in Bronze or Gold. You can order it with single vision, varifocal or bifocal lenses made to your prescription. It is part of our Carlton collection.
Bronze or Gold: which one is you?
Bronze. Bronze is a warm, brownish metallic finish. It gives a polished, classic finish that never looks loud.
Gold. Gold is a warm, soft gold. It is a warm, elegant choice that pairs nicely with earthy colours.
If you are stuck between two, choose the one closest to the colours you wear most. You can always add a second pair later.
About the CAR21 design
Oval lenses balance square and heart-shaped faces and keep the overall look soft. Metal lets the frame stay slim and light while keeping its shape.
Whether it is your main pair or a spare, the CAR21 is easy to live with.
Styling tips
Choose the colour closest to what you wear most and it will go with almost everything.
How it fits
| Brand | Carlton |
|---|---|
| Colours | Bronze, Gold |
| Frame size | 48-18-135 mm (lens width, bridge, arm length) |
| Lens depth | 34 mm |
At 48mm per lens, it is on the smaller side, which is ideal if most frames feel too wide. The 18mm bridge is average. The 135mm arms are a standard length. Across the lenses and bridge it measures about 114mm.
To check the fit, look at the three numbers printed inside the arm of glasses you already own. If they are within two or three millimetres, this frame should feel similar.
Lens options for the CAR21
Choose the lens type that suits how you use your glasses:
- Single vision: one prescription across the whole lens, for distance, reading or the computer.
- Varifocal: near, intermediate and distance in one lens, with no visible line.
- Bifocal: a separate reading segment in the lower part of the lens.
- Ready readers: simple magnification if you just need help with close work.
The 34mm lens depth is on the slim side, so single vision or bifocal lenses usually work best. Want lighter lenses? A high-index lens is thinner than standard plastic. Pair it with an anti-reflective coating for less glare when you drive after dark.
Ordering online is simple
You need a valid prescription from your optician and your pupillary distance (PD), the distance between your pupils. Many opticians include your PD on the prescription; if yours does not, just ask for it. Choose your colour, pick your lens type, enter your details and add any lens upgrades. If you are unsure about size, compare the measurements above with a pair you already wear.
From our lab to you
Pick your colour and lenses, add your prescription and PD, and our UK lab cuts your lenses and fits them into your CAR21. Every pair is checked before it leaves us.
A little care goes a long way
Rinse off any grit before you wipe, dry the lenses with a clean microfibre cloth, and take your glasses off with both hands so the arms stay aligned. See our lens care guide for more.
Questions we often get
Is the CAR21 suitable for varifocals?
The 34mm lens depth is fairly shallow, so single vision or bifocal lenses usually work better.
Is the CAR21 comfortable for all-day wear?
Yes. It is a lightweight frame, and a thinner lens for a stronger prescription keeps the weight down even further.
Is it a small frame?
Yes. With 48mm lenses it suits smaller faces.
Who glazes my lenses?
Our own optical lab in the UK. Your lenses are made to your prescription and fitted into the frame before your glasses are sent to you.
Still deciding on the CAR21? Browse more prescription glasses.
Lens prices
Lens types
| Lenses | Single Vision | Bifocal | Varifocal |
|---|---|---|---|
| 1.5 Index (standard) | FREE | ÂŁ40 | ÂŁ69 |
| Transitions | ÂŁ50 | ÂŁ90 | ÂŁ119 |
| Sunglasses tint | ÂŁ10 | ÂŁ50 | ÂŁ75 |
| Blue light filter | ÂŁ30 | ÂŁ70 | ÂŁ99 |
Basic 1.5 Single Vision lenses with anti-reflection coating are included in the frame price.
Thinner lens upgrades
| Lens index | Single Vision | Bifocal | Varifocal |
|---|---|---|---|
| 1.6 + HMC | ÂŁ30 | ÂŁ70 | ÂŁ95 |
| 1.67 + HMC | ÂŁ50 | ÂŁ90 | ÂŁ119 |
| 1.74 + HMC | ÂŁ70 | – | ÂŁ135 |
Higher index lenses are thinner and lighter, and are worth it for stronger prescriptions. All include an HMC coating.
Frame details & size guide
Specifications
| Brand | Carlton |
|---|---|
| Bridge Size | 18 |
| Color | Bronze, C1-GOLD 54Ă—16 |
| Eye Size | 48 |
| Lens Depth | 34 |
| Temple Length | 135 |
How to read frame sizes
The three numbers (for example 48-20-140) are the lens width, the bridge and the arm length in millimetres. Compare them with a pair you already own.

Delivery, returns & what is included
Delivery
- Single Vision: 5-7 working days
- Bifocal: 7-10 working days
- Varifocal: 7-10 working days
- Dispatched within 48 hours by tracked Royal Mail service
Delivery is free. Your estimate for your country is shown at checkout.
Returns & exchanges
Free 30-day returns or exchanges. If your glasses are not right for you, we will make it right.
What is included
- Anti-reflection lenses included
- Case and microfibre cloth
- Lenses made in our UK optical lab
- All frames CE marked
- Worldwide delivery
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