CK903
£ 39
A unisex oval frame in blue, pink or matt purple. Light, translucent finish.
- Size: 45-15-127 mm, lens depth 34 mm
- Colours: Blue, Pink, Matt Purple
- Case & microfibre cloth included
- Lenses made in our UK labs
- Free delivery
- Free 30-day returns
About the Carlton CK903
CK903 Prescription Glasses
There is something calm and classic about an oval frame. The CK903 is a unisex full-rim oval frame, sized 45-15-127, in Blue, Pink or Matt Purple. You can order it with single vision, varifocal or bifocal lenses made to your prescription. It belongs to the Carlton collection.
Which colour is you?
Blue. The Blue version is translucent blue. It looks great with blue or grey eyes and pairs easily with denim and white.
Pink. The Pink version is translucent pink. It is soft and pretty, and it suits fair and cool skin tones.
Matt Purple. Matt Purple is easy to wear. It adds a confident touch of colour and suits fair and cool skin tones.
Each colour is shown in the gallery, so you can compare them side by side before you decide.
Design details
Oval lenses balance square and heart-shaped faces and keep the overall look soft. The translucent finish lets light through, so the frame looks lighter and softer than a solid colour.
If you want a frame you can put on in the morning and forget about, the CK903 is a strong choice.
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.
Frame size and fit
| Brand | Carlton |
|---|---|
| Colours | Blue, Pink, Matt Purple |
| Frame size | 45-15-127 mm (lens width, bridge, arm length) |
| Lens depth | 34 mm |
With 45mm lenses, this is a compact frame that suits smaller faces. The 15mm bridge is narrow, so it sits securely on a slimmer nose. The 127mm arms are a little shorter than standard. Across the lenses and bridge it measures about 105mm.
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 CK903
Pick the lenses that match your prescription:
- 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.
The 34mm lens depth is on the slim side, so single vision or bifocal lenses usually work best. 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.
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 CK903. Every pair is checked before it leaves us.
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.
Your questions, answered
Is the CK903 suitable for varifocals?
The 34mm lens depth is fairly shallow, so single vision or bifocal lenses usually work better.
Can I use the CK903 as computer glasses?
Yes. Single vision lenses set to your screen distance work well for desk work.
Is it a small frame?
Yes. With 45mm lenses it suits smaller faces.
Will it suit a narrow nose?
Yes. The 15mm bridge is designed for slimmer noses.
Who glazes my lenses?
Our own optical lab in the UK. Your lenses are made to your prescription and fitted into the frame before your glasses are sent to you.
Still deciding on the CK903? 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 | Carlton |
|---|---|
| Bridge Size | 15 |
| Color | Blue, C3-PINK 50Ă—17, Matt Purple |
| Eye Size | 45 |
| Lens Depth | 34 |
| Temple Length | 127 |
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 CK902
£ 39+ Single Vision with MAR Coat & FREE Delivery
Customise & Buy
Carlton CK904
£ 39+ Single Vision with MAR Coat & FREE Delivery
Customise & Buy
Carlton CK901
£ 39+ Single Vision with MAR Coat & FREE Delivery
Customise & Buy
Carlton CK906
£ 39+ Single Vision with MAR Coat & FREE Delivery
Customise & Buy

