CAR38
£ 39
A unisex square frame in black, blue or champagne. Light, translucent finish.
- Size: 52-17-140 mm, lens depth 42 mm
- Colours: Black, Blue, Champagne
- Case & microfibre cloth included
- Lenses made in our UK labs
- Free delivery
- Free 30-day returns
About the Carlton CAR38
CAR38 Prescription Glasses
Square frames have a confident, modern look that works almost anywhere. The CAR38 is a unisex full-rim square frame, sized 52-17-140, in Black, Blue or Champagne. You can order it with single vision, varifocal or bifocal lenses made to your prescription. It is part of our Carlton range.
Which colour is you?
Black. Black is a deep, solid black. It looks sharp at work and just as good with jeans at the weekend.
Blue. The Blue version is translucent blue. It looks great with blue or grey eyes and pairs easily with denim and white.
Champagne. The Champagne version is translucent champagne. Because light passes through it, the frame looks lighter on the face and lets your features do the talking.
If you are stuck between two, choose the one closest to the colours you wear most. You can always add a second pair later.
Why you will like it
Square lenses add structure to round and oval faces and make features look more defined. 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 CAR38 an easy pick for everyday wear.
Styling tips
Choose the colour closest to what you wear most and it will go with almost everything.
Frame size and fit
| Brand | Carlton |
|---|---|
| Colours | Black, Blue, Champagne |
| Frame size | 52-17-140 mm (lens width, bridge, arm length) |
| Lens depth | 42 mm |
At 52mm per lens, it sits in the medium range, the most common adult fit. The 17mm bridge is average. The 140mm arms are a standard length. Across the lenses and bridge it measures about 121mm.
Not sure about sizing? Compare these numbers with the ones on the inside arm of a pair that fits you well. A difference of two or three millimetres or less usually means a similar fit.
Lens options for the CAR38
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.
At 42mm, the lens depth is deeper than most frames in our range, so varifocal lenses have lots of room. 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.
What you will need
Have your prescription to hand before you start. It shows the sphere, cylinder and axis for each eye, and sometimes your PD. If the PD is missing, your optician can give it to you. Then choose your colour and lens type, enter your prescription and add any extras, such as thinner lenses or a coating. You can check everything in your basket before you pay.
Made for you in our UK lab
Pick your colour and lenses, add your prescription and PD, and our UK lab cuts your lenses and fits them into your CAR38. Every pair is checked before it leaves us.
Keep them looking new
Clean your lenses with a microfibre cloth rather than your jumper, keep them in their case when they are in your bag, and do not leave them on a sunny car dashboard. Our lens care guide has more tips.
Questions we often get
Can I get varifocal lenses in the CAR38?
Yes. The 42mm lens depth gives varifocal lenses enough height for all three vision zones.
Can I use the CAR38 as computer glasses?
Yes. Single vision lenses set to your screen distance, or varifocals if you also need distance vision, both work well for desk work.
What size is it?
It is size 52-17-140: 52mm lens width, 17mm bridge and 140mm arms, a medium fit.
Where are my lenses made?
In our UK optical lab. They are cut to your prescription, fitted into your frame and checked before they are sent out.
Want to compare? See 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 | 17 |
| Color | Black, Blue, Champagne |
| Eye Size | 52 |
| Lens Depth | 42 |
| 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
You may also like

Carlton CAR37
£ 39+ Single Vision with MAR Coat & FREE Delivery
Customise & Buy
Carlton CAR39
£ 39+ Single Vision with MAR Coat & FREE Delivery
Customise & Buy
Carlton CAR36
£ 39+ Single Vision with MAR Coat & FREE Delivery
Customise & Buy
Carlton CAR40
£ 39+ Single Vision with MAR Coat & FREE Delivery
Customise & Buy

