CAR46
£ 39
A unisex rounded square frame in black, champagne or havana. Clear crystal finish.
- Size: 50-15-135 mm, lens depth 41 mm
- Colours: Black, Champagne, Havana
- Case & microfibre cloth included
- Lenses made in our UK labs
- Free delivery
- Free 30-day returns
About the Carlton CAR46
CAR46 Prescription Glasses
Some frames just suit almost everyone. Rounded squares are high on that list. The CAR46 is a unisex full-rim rounded square frame, sized 50-15-135, in Black, Champagne or Havana. You can order it with single vision, varifocal or bifocal lenses made to your prescription. You will find it in our Carlton range.
3 colours to choose from
Black. Black is a deep, solid black. It looks sharp at work and just as good with jeans at the weekend.
Champagne. The Champagne version is champagne crystal. It keeps the look soft and understated, and it works especially well on fair skin.
Havana. In Havana, the frame is tortoiseshell. It is softer than black and suits brown, auburn and red hair.
Still torn? Think about what you wear on an ordinary weekday, not on a night out. That is the colour you will be happiest with.
Shape and style
The rounded corners and straight lines balance most face shapes, especially oval, square and heart-shaped faces. A crystal front looks modern and light, and it goes with everything.
The CAR46 is a great everyday frame: smart enough for work and relaxed enough for the weekend.
Styling tips
Keep the rest of your look simple and let the frame do the talking. It works just as well with workwear as it does with weekend clothes.
Size and fit
| Brand | Carlton |
|---|---|
| Colours | Black, Champagne, Havana |
| Frame size | 50-15-135 mm (lens width, bridge, arm length) |
| Lens depth | 41 mm |
At 50mm per lens, it is on the smaller side, which is ideal if most frames feel too wide. The 15mm bridge is narrow, so it sits securely on a slimmer nose. The 135mm arms are a standard length. Across the lenses and bridge it measures about 115mm.
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 CAR46
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 41mm, the lens depth is deeper than most frames in our range, so varifocal lenses have lots of room. If your prescription is high, a high-index lens keeps things thin. An anti-reflective, scratch-resistant coating is a sensible extra for everyday wear.
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.
How your glasses are made
Every pair is made to order in our own UK lab. Your lenses are cut to your prescription, fitted into your CAR46 and checked by our technicians before they are sent out.
Looking after them
Use lens spray and a soft cloth, fold the arms before putting your glasses down, and store them in a hard case. Our guide to looking after your lenses covers the rest.
FAQs
Can I get varifocal lenses in the CAR46?
Yes. The 41mm lens depth gives varifocal lenses enough height for all three vision zones.
Is the CAR46 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 50mm lenses it suits smaller faces.
Will it suit a narrow nose?
Yes. The 15mm bridge is designed for slimmer noses.
What does crystal mean?
A clear, see-through finish.
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.
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 | 15 |
| Color | Black, Champagne, Havana |
| Eye Size | 50 |
| Lens Depth | 41 |
| 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
You may also like

Carlton CK900
£ 39+ Single Vision with MAR Coat & FREE Delivery
Customise & Buy
Carlton CK901
£ 39+ Single Vision with MAR Coat & FREE Delivery
Customise & Buy
Carlton CAR45
£ 39+ Single Vision with MAR Coat & FREE Delivery
Customise & Buy
Carlton CAR44
£ 39+ Single Vision with MAR Coat & FREE Delivery
Customise & Buy

