CAR34
£ 39
A unisex rectangular frame in black, blue or grey. Light, translucent finish.
- Size: 52-18-140 mm, lens depth 35 mm
- Colours: Black, Blue, Grey
- Case & microfibre cloth included
- Lenses made in our UK labs
- Free delivery
- Free 30-day returns
About the Carlton CAR34
CAR34 Prescription Glasses
If you want glasses that look smart and get out of the way, a rectangle is hard to beat. The CAR34 is a unisex full-rim rectangular frame, sized 52-18-140, in Black, Blue or Grey. You can order it with single vision, varifocal or bifocal lenses made to your prescription. You will find it in our Carlton collection.
3 colours to choose from
Black. Black is a deep, solid black. Black suits every hair colour and frames the face with confidence.
Blue. The Blue version is translucent blue. It is a fresh alternative to black that still looks professional.
Grey. The Grey version is translucent grey. It is a quiet, professional finish that works with navy, charcoal and white.
Each colour is shown in the gallery, so you can compare them side by side before you decide.
Why you will like it
Rectangular lenses suit round and oval faces, adding a bit of definition. The translucent finish lets light through, so the frame looks lighter and softer than a solid colour.
It is the kind of frame that works with most outfits, which makes the CAR34 an easy pick for everyday wear.
How to wear it
Choose the colour closest to what you wear most and it will go with almost everything.
How it fits
| Brand | Carlton |
|---|---|
| Colours | Black, Blue, Grey |
| Frame size | 52-18-140 mm (lens width, bridge, arm length) |
| Lens depth | 35 mm |
The 52mm lenses make this a medium frame that suits most faces. The 18mm bridge is average. The 140mm arms are a standard length. Across the lenses and bridge it measures about 122mm.
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 CAR34
Your optician’s prescription will usually tell you which of these you need:
- Varifocals if you want to see near and far without swapping glasses.
- Single vision for one task done well, such as driving, reading or screen work.
- Bifocals if you prefer a clearly defined reading area.
- Ready readers for straightforward close-up help.
The 35mm lens depth works with single vision, bifocal and many varifocal lenses. With a stronger prescription, a thinner high-index lens keeps the edges slim, and an anti-reflective coating cuts reflections from screens and street lights.
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
Every pair is made to order in our own UK lab. Your lenses are cut to your prescription, fitted into your CAR34 and checked by our technicians before they are sent out.
Keep them looking new
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
Can I get varifocal lenses in the CAR34?
Yes. The 35mm lens depth gives varifocal lenses enough height for all three vision zones.
Can I wear the CAR34 for driving?
Yes. Single vision or varifocal lenses work well for driving, and an anti-reflective coating helps cut glare from headlights at night.
What size is it?
It is size 52-18-140: 52mm lens width, 18mm bridge and 140mm arms, a medium fit.
Do you make the lenses yourselves?
Yes. Every pair is made to order in our UK optical lab, where your lenses are cut to your prescription and fitted into your frame.
Not quite the one? Take a look at our 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 | Black, Blue, C1-GREY |
| Eye Size | 52 |
| Lens Depth | 35 |
| Temple Length | 140 |
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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