Anti-reflective and MAR coatings are among the most worthwhile upgrades you can add to a pair of prescription glasses, yet they are also among the least understood. If you have ever been asked at checkout whether you want an anti-reflective or multi-layer coating and were not sure what you were paying for, this guide explains exactly what these coatings do, who benefits most, and why they make such a noticeable difference to everyday vision.
The short version: an anti-reflective coating cuts the reflections that bounce off your lenses, letting far more light reach your eyes. A MAR — multi-anti-reflective — coating does the same job using several layers, and usually adds scratch resistance, smudge resistance and water repellency on top. The result is clearer vision, less glare, and lenses that stay cleaner and look almost invisible.
What Is an Anti-Reflective Coating?
An anti-reflective coating, often shortened to AR or called anti-glare, is an ultra-thin treatment applied to the surface of a lens to reduce the light that reflects off it. Every time light meets a lens surface, a small amount bounces back instead of passing through. An uncoated lens loses roughly 4 to 5 per cent of light at each surface, so with a front and a back surface, around 8 per cent of available light never reaches your eyes — it is lost as reflections and glare.
An anti-reflective coating recovers almost all of that lost light. A well-made AR coating lifts light transmission from about 92 per cent on an uncoated lens to around 99 per cent. In practice that means crisper detail, better contrast, and far fewer of the distracting reflections that make your eyes hard to see in photographs or on video calls.
What Is MAR Coating, and How Is It Different?
MAR stands for multi-anti-reflective, and the clue is in the name. Rather than a single anti-reflective layer, a MAR coating is built from several layers, each tuned to cancel reflections across a wider range of the light spectrum. This makes the anti-reflective effect more complete and more consistent than a basic single-layer coating.
Just as importantly, a MAR coating rarely works alone. The same stack of layers usually includes a scratch-resistant layer to protect the lens surface, a smudge-resistant (oleophobic) layer that repels fingerprints and grease, and a water-repellent (hydrophobic) layer that helps rain and moisture run off. So a MAR coating is not only better at reducing reflections — it also keeps your lenses cleaner, clearer and better protected day to day.
Here is how the two compare at a glance:
| Feature | Anti-reflective (AR) | MAR (multi-layer AR) |
| Number of layers | Single or few layers | Multiple stacked layers |
| Reflection control | Reduces reflections | Reduces reflections more effectively across the spectrum |
| Added functions | Anti-reflective only | Usually combined with scratch-resistant, smudge-resistant and water-repellent layers |
| Durability | Good | Higher — built to last |
| Best for | Everyday glasses on a budget | Screen users, night drivers, higher-index and stronger prescriptions |
The Key Benefits of AR and MAR Coatings
Clearer, sharper vision. By letting more light through the lens, these coatings improve contrast and clarity — particularly noticeable in low light, when every bit of available light counts.
Less glare, especially at night. Reflections from oncoming headlights and street lights are one of the most common complaints among glasses wearers who drive after dark. Cutting those reflections reduces the halos and ghost images that uncoated lenses produce.
More comfortable screen time. Reflections from monitors, phones and overhead office lighting add to visual fatigue over a long day. Reducing them eases the strain, with a benefit that builds up over hours of screen work.
Better appearance. Uncoated lenses carry a mirror-like sheen that hides your eyes. AR and MAR coatings make lenses look almost clear, which matters for photographs, video calls and face-to-face conversation.
Cleaner, better-protected lenses. With a MAR coating’s scratch, smudge and water-repellent layers, lenses pick up fewer marks, are easier to wipe clean, and stand up better to everyday wear.
Who Should Choose AR or MAR Coatings?
Anti-reflective coatings improve almost any pair of glasses, which is why many opticians recommend them as standard. That said, the benefit is greatest for some wearers than others.
The case is strongest if you drive at night, spend long hours in front of screens, or have a stronger prescription. Higher-index lenses, used for stronger prescriptions, naturally reflect a little more light, so an anti-reflective coating makes a bigger visible difference on them. At Glasses Store, every lens at 1.60 index and above includes a MAR coating as standard, while at 1.50 index you can add anti-reflective coating as an optional upgrade alongside the anti-scratch treatment that comes as standard.
How Do I Care for Coated Lenses?
Coated lenses are easy to look after, and looking after them well keeps them performing at their best. Rinse them under clean water before wiping, to lift away any grit that might scratch the surface. Use a microfibre cloth rather than a tissue or your shirt, and a drop of washing-up liquid or a dedicated lens spray rather than household cleaners, which can damage the coating over time. Dry them gently and store them in a case when not in use.
Frequently Asked Questions
Is an anti-reflective coating worth it?
For most people, yes. It improves clarity and contrast, cuts glare at night and on screens, and makes lenses look almost invisible. The benefit is greatest for night drivers, screen users and stronger prescriptions.
What is the difference between AR and MAR coatings?
An AR coating reduces reflections using one or a few layers. A MAR coating uses multiple layers for a more complete anti-reflective effect, and usually adds scratch-resistant, smudge-resistant and water-repellent layers as well.
Does anti-reflective coating help with night driving?
Yes. Much of the glare, halos and ghosting from headlights is caused by light reflecting off the lens surface. An anti-reflective coating reduces those reflections, making night driving more comfortable.
Is anti-reflective coating the same as blue light filtering?
No. An anti-reflective coating reduces reflections across the whole visible spectrum, while a blue light filter specifically targets blue light from screens and artificial lighting. They are different treatments and can be combined.
Will the coating scratch or wear off?
Quality coatings are durable, and a MAR coating includes a scratch-resistant layer. Cleaning your lenses properly — rinsing first, then using a microfibre cloth — keeps the coating in good condition for the life of the lenses.
The Bottom Line
Anti-reflective and MAR coatings are a small upgrade that makes a genuine, everyday difference — clearer vision, less glare, more comfortable screen time, and lenses that stay cleaner and look better. Whether it comes as standard with your lens index or as an optional upgrade, it is one of the most worthwhile choices you can make when ordering glasses. You can add lens coatings to your order at checkout, alongside your prescription and lens choice.
