CK907
£ 39
A unisex rectangular frame in black, crystal or navy. Clear crystal finish.
- Size: 47-16-130 mm, lens depth 34 mm
- Colours: Black, Crystal, Navy
- Case & microfibre cloth included
- Lenses made in our UK labs
- Free delivery
- Free 30-day returns
About the Carlton CK907
CK907 Prescription Glasses
Rectangular frames are the dependable all-rounders of eyewear. The CK907 is a unisex full-rim rectangular frame, sized 47-16-130, in Black, Crystal or Navy. 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 defines the eyes and goes with every outfit you own.
Crystal. The Crystal version is crystal clear. It keeps the look soft and understated, and it works especially well on fair skin.
Navy. Navy is a deep, dark blue. It is a fresh alternative to black that still looks professional.
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.
About the CK907 design
Rectangular lenses suit round and oval faces, adding a bit of definition. The crystal finish is clear and fresh, and it lets your features take centre stage.
The CK907 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, Crystal, Navy |
| Frame size | 47-16-130 mm (lens width, bridge, arm length) |
| Lens depth | 34 mm |
At 47mm per lens, it is on the smaller side, which is ideal if most frames feel too wide. The 16mm bridge is on the narrow side. The 130mm arms are a little shorter than standard. Across the lenses and bridge it measures about 110mm.
The easiest way to check is against glasses you already love. Most frames show their size inside the arm; if yours are close to these, you are in safe territory.
Lens options for the CK907
Choose the lens type that suits how you use your glasses:
- Single vision: the same prescription from edge to edge.
- Bifocal: distance at the top and a reading segment at the bottom.
- Varifocal: a smooth change from distance to reading, with no line.
- Ready readers: a fixed magnification for books, phones and screens.
The 34mm lens depth is on the slim side, so single vision or bifocal lenses usually work best. 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.
Before you order
Make sure your prescription is in date; most adults in the UK are advised to have an eye test every two years, and your optician will tell you if you need one sooner. You will also need your PD, which tells our lab where to centre the lenses. With those two things ready, ordering takes a few minutes: choose your colour, pick your lenses, enter your details and you are done.
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 CK907 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.
FAQs
Is the CK907 suitable for varifocals?
The 34mm lens depth is fairly shallow, so single vision or bifocal lenses usually work better.
Is the CK907 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 47mm lenses it suits smaller faces.
Will it suit a narrow nose?
Yes. The 16mm bridge is designed for slimmer noses.
What does crystal mean?
A clear, see-through finish.
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 | 16 |
| Color | Black, Crystal, Navy |
| Eye Size | 47 |
| Lens Depth | 34 |
| Temple Length | 130 |
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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