Synergy 6043
$ 168 Original price was: $ 168.$ 118Current price is: $ 118.
A unisex square frame in black or havana. Neat studs at the corners.
- Size: 50-19-140 mm, lens depth 41 mm
- Frame: Full Rim, Plastic
- Colours: Black, Havana
- Case & microfibre cloth included
- Lenses made in our UK labs
- Delivered across Australia
- Free 30-day returns
About the Synergy 6043
Synergy 6043 Prescription Glasses
Square frames have a confident, modern look that works almost anywhere. The Synergy 6043 is a unisex full-rim plastic square frame, sized 50-19-140, in Black or Havana. You can order it with single vision, progressive or bifocal lenses made to your prescription. You will find it in our Synergy collection.
Choosing your Synergy 6043 colour
Black. Black is a deep, solid black. It defines the eyes and goes with every outfit you own.
Havana. The Havana version is tortoiseshell. It is a classic that looks relaxed and a little bit vintage.
Each colour is shown in the gallery, so you can compare them side by side before you decide.
Shape and style
Square lenses add structure to round and oval faces and make features look more defined. Look for the little studs at the corners, a classic detail that lifts the whole frame.
The thicker frame front gives it real presence on the face. Plastic keeps the weight down and allows richer, deeper colour than metal.
The Synergy 6043 is a great everyday frame: smart enough for work and relaxed enough for the weekend.
Styling tips
Because it is unisex, it is easy to share the look across the household. Pick the colour that matches your wardrobe rather than worrying about who it is designed for.
Frame size and fit
| Brand | Synergy |
|---|---|
| Frame | Full Rim, Plastic |
| Colours | Black, Havana |
| Frame size | 50-19-140 mm (lens width, bridge, arm length) |
| Lens depth | 41 mm |
| Designed for | Men, Women |
At 50mm per lens, it is on the smaller side, which is ideal if most frames feel too wide. The 19mm bridge is a little wider than average. The 140mm arms are a standard length. Across the lenses and bridge it measures about 119mm.
To check the fit, look at the three numbers printed inside the arm of glasses you already own. If they are within two or three millimetres, this frame should feel similar.
Lens options for the Synergy 6043
Choose the lens type that suits how you use your glasses:
- Progressive lenses for clear vision at every distance without swapping pairs.
- Single vision for one job done well: driving, reading or desk work.
- Bifocal if you like a clearly marked reading section.
- Ready readers when you only need help close up.
At 41mm, the lens depth is deeper than most frames in our range, so progressive lenses have lots of room. Stronger prescription? A high-index lens keeps things thin and light. An anti-reflective, scratch-resistant coating is worth adding too, especially if you drive at night. Spend a lot of time on screens? This frame is also part of our blue light glasses range.
Ordering online is easier than you think
All you need is a current prescription from your optometrist and your pupillary distance (PD), the distance between your pupils. Your PD is often written on your prescription; if it is not, ask your optometrist for it. Pick your colour, choose your lens type, enter your details and add any lens upgrades. If you are not sure about sizing, compare the measurements above with a pair you already own. It only takes a minute and saves any guesswork.
From our lab to you
Every pair is made to order. Our UK optical lab cuts your lenses to your prescription, fits them into your Synergy 6043 and then sends your glasses to you in Australia.
A little care goes a long way
Rinse off dust before wiping, dry the lenses with a clean microfibre cloth, and take your glasses off with both hands so the arms stay straight. For more tips, see our lens care guide.
Questions we often get
Can I get progressive lenses in the Synergy 6043?
Yes. The 41mm lens depth gives progressive lenses enough height for all three vision zones.
Is the Synergy 6043 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.
Is it unisex?
Yes. It suits men and women.
What is havana or tortoiseshell?
A mottled pattern of browns and ambers, a classic eyewear finish.
Where are my lenses made?
In our UK optical lab. They are cut to your prescription, fitted into your frame and then sent to you in Australia.
Not quite the one? Take a look at our women’s glasses, men’s glasses and prescription glasses.
Lens prices
Lens types
| Lenses | Single Vision | Bifocal | Varifocal |
|---|---|---|---|
| 1.5 Index (standard) | FREE | $40 | $69 |
| Transitions | $50 | $90 | $119 |
| Sunglasses tint | $10 | $50 | $75 |
| Blue light filter | $30 | $70 | $99 |
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 | $30 | $70 | $95 |
| 1.67 + HMC | $50 | $90 | $119 |
| 1.74 + HMC | $70 | – | $135 |
Higher index lenses are thinner and lighter, and are worth it for stronger prescriptions. All include an HMC coating.
Frame details & size guide
Specifications
| Color | Black, Havana |
|---|---|
| Eye Size | 50 |
| Brand | Synergy |
| Lens Depth | 41 |
| Temple Length | 140 |
| Bridge Size | 19 |
| Type | Optical |
| Material | Plastic |
| Wearer | Men, Women |
| Rim | Full Rim |
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 to Australia: the cost and your estimate are shown at checkout before you pay.
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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