CD7170
£ 69
A unisex rounded square frame in black or matt purple. Decorative arms.
- Size: 51-17-140 mm, lens depth 36 mm
- Colours: Black, Matt Purple
- Case & microfibre cloth included
- Lenses made in our UK labs
- Free delivery
- Free 30-day returns
About the Carducci CD7170
CD7170 Prescription Glasses
Some frames just suit almost everyone. Rounded squares are high on that list. The CD7170 is a unisex full-rim metal rounded square frame, sized 51-17-140, in Black or Matt Purple. You can order it with single vision, varifocal or bifocal lenses made to your prescription. It is part of our Carducci range.
Black or Matt Purple: which one is you?
Black. Black is a deep, solid black. It looks sharp at work and just as good with jeans at the weekend.
Matt Purple. Matt Purple is easy to wear. It works beautifully with navy, grey and silver jewellery.
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
The rounded corners and straight lines balance most face shapes, especially oval, square and heart-shaped faces. Decorative arms give the frame a finished, designer feel when you see it side on.
Tortoiseshell arms add warmth and a classic finishing touch. A patterned front adds personality while still being easy to wear. The slim metal construction keeps it light and neat, and it is easy for an optician to adjust.
Whether it is your main pair or a spare, the CD7170 is easy to live with.
Styling tips
Choose the colour closest to what you wear most and it will go with almost everything.
Frame size and fit
| Brand | Carducci |
|---|---|
| Colours | Black, Matt Purple |
| Frame size | 51-17-140 mm (lens width, bridge, arm length) |
| Lens depth | 36 mm |
The 51mm lenses make this a medium frame that suits most faces. The 17mm bridge is average. The 140mm arms are a standard length. Across the lenses and bridge it measures about 119mm.
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 CD7170
Choose the lens type that suits how you use your glasses:
- 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 36mm lens depth works with single vision, bifocal and many varifocal lenses. 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.
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.
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 CD7170. Every pair is checked before it leaves us.
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.
Your questions, answered
Can I get varifocal lenses in the CD7170?
Yes. The 36mm lens depth gives varifocal lenses enough height for all three vision zones.
Can I use the CD7170 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 51-17-140: 51mm 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.
Still deciding on the CD7170? 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 | Carducci |
|---|---|
| Bridge Size | 17 |
| Color | Black, Matt Purple |
| Eye Size | 51 |
| Lens Depth | 36 |
| 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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