The Right Lens Can Make All the Difference

Choosing spectacle lenses is about more than matching a prescription to a frame. At our Worcester practice, the right lens should give you clear, comfortable vision for the way you live, whether you drive, read, use screens, work at different distances, or want one pair of glasses to do several jobs. Following your eye examination, we take time to understand your eyes, your routine and any previous problems, then explain the lens choices in plain English.

Our aim is simple: help you achieve the best possible vision without pressure. Sometimes that means recommending new lenses. Sometimes it means saying your current glasses are still serving you well.

Practical, Honest Advice

If your prescription has changed very little, we will tell you. A small change may still make a worthwhile difference for some people, particularly for driving, reading or detailed work, but it does not automatically mean you need new glasses. We will explain what difference you are likely to notice and leave the decision with you.

There is no hard sell. We will explain the options clearly and leave the decision with you.

Struggled With Glasses Before?

We often help patients whose glasses have never felt quite right or whose problems have not been resolved elsewhere. Sometimes the answer is a different lens design, more accurate measurements, a better frame fit or simply taking more time to understand how the glasses are being used. As an independent practice, we have access to a wide range of lens suppliers and solutions, so we can explore different options rather than being limited to one route.

Visual Lens Types

Different lens types are designed around different viewing distances and visual tasks. We will help you choose the option that best matches your prescription, work, hobbies and everyday routine.

Whichever visual lens type you need, there may also be choices in lens material, thickness and coating. Frame size, shape and fit can influence the finished thickness and appearance, particularly with stronger prescriptions, so we consider the frame and lenses together. Most lens types can also be supplied as prescription sunglasses or with Transitions light-reactive technology where suitable.

Single Vision Lenses

Single vision lenses correct one viewing distance. They may be prescribed for distance, reading, music, hobbies or screen work, depending on how you need to use your vision.

Bifocal Lenses

Bifocals have two distinct zones, usually distance at the top and reading at the bottom. Some patients like the clear separation and reliable reading area. They can suit people who do not want a progressive corridor, although the visible segment and jump between distances are not ideal for everyone. We will talk through the practical pros and cons.

Varifocal Lenses

Varifocal lenses provide distance, intermediate, and near vision without a visible line. Modern designs can be very comfortable, but the best result depends on accurate measurements, suitable frame choice, realistic advice, and careful fitting. Different designs suit different habits: a keen driver, an office worker, and someone who reads for long periods may need different priorities.

If you have struggled with varifocals before, it does not always mean varifocals are wrong for you. The design, measurements, prescription, frame fit, or expectations may not have matched your needs. We will review these details carefully.

Occupational and Computer Lenses

Occupational lenses are designed around specific working distances, such as a desk, till, workshop, consulting room, or multiple screens. They can give a wider comfortable area than general varifocals for close and intermediate tasks, but they are not usually suitable for driving. If you spend many hours at a screen, bring details of your working distance to your appointment.

Children’s Lenses

Children use their eyes and glasses differently from adults, so lens design, impact resistance, fit and coating choice all matter. We offer specialist options including Eyezen Kids and Crizal Kids, with fuller information on our children’s eyecare page.

Lens Materials, Thickness and Optical Quality

The same prescription can look and feel quite different depending on the lens material, refractive index, frame size and frame shape. A higher refractive index can make a lens thinner, but each material has its own balance of optical quality, strength, weight, tintability, photochromic performance and cost. Higher-index lenses are also progressively more expensive, so the thinnest material is not automatically the best choice.

These are general characteristics rather than fixed rules. Exact performance varies between manufacturers, lens designs and coatings. Photochromic darkness and fade-back also vary with temperature, ultraviolet exposure, lens material and colour.

CR-39 (1.50 index)

CR-39 remains an excellent optical material for lower prescriptions. It gives very good clarity and is especially useful where a deep conventional sunglass tint is wanted. Its main disadvantages are thickness in stronger prescriptions and lower impact resistance compared with tougher materials.

Polycarbonate (about 1.59 index)

Polycarbonate combines a refractive index of about 1.59 with very high impact resistance and low weight. That makes it particularly useful for children, sport, safety-related applications and some rimless frames. The trade-off is optical: it generally produces more colour fringing away from the optical centre than CR-39 or many 1.60 lenses, so it is not automatically the best material simply because it is strong.

1.60 high-index

A 1.60 lens is often the most versatile step up from standard material. It can reduce thickness without the larger jump in cost associated with higher indexes, and many 1.60 materials combine good optical performance with useful toughness for modern frame designs.

1.67 high-index

A 1.67 lens can give a worthwhile reduction in thickness for stronger prescriptions. It costs more than 1.60 and can show more peripheral colour fringing, so the benefit needs to justify the extra expense for the individual prescription and frame.

1.74 high-index

A 1.74 lens is chosen mainly where reducing thickness matters enough to justify the highest material cost. It is not automatically the strongest or optically best material, and the improvement over 1.67 can be modest in some prescriptions. Frame choice is particularly important.

Frame choice can make a major difference

Lens thickness is influenced not only by the material but also by the size, shape and fit of the frame. With short-sighted prescriptions, a smaller, well-centred frame can substantially reduce edge thickness. With long-sighted prescriptions, the frame shape and lens diameter can also affect centre thickness and magnification.

A well-suited frame can therefore reduce or sometimes remove the need to pay for the highest-index material. We will look at the prescription and frame together, show you where spending more is likely to make a visible difference, and say when a more modest lens material should give an equally satisfactory result.

Lens Coatings

Lens coatings can make everyday wear easier. A good anti-reflection coating can reduce distracting reflections, improve the appearance of the lenses, and make cleaning simpler. Crizal options may offer benefits such as resistance to scratches, smudges, dust, water, and reflections, depending on the exact coating chosen.

Manufacturer guarantees vary by product and are subject to their terms, so we will explain the relevant cover at the time of purchase. We also give practical advice on care, because no coating is indestructible.

Essilor Lens Expertise

Actons Opticians is recognised by Essilor as an Essilor Expert practice. This reflects our experience advising on and fitting Essilor lenses, including premium Varilux varifocals, Transitions light-reactive lenses and Crizal lens coatings. The best lens is not simply the most expensive one: it is the design that best matches your prescription, visual habits, frame and expectations.

Accurate measurements and careful fitting are especially important with premium lenses. We consider how you use your vision at distance, on screens and at reading range, as well as the way your chosen frame sits on your face. We then explain which features are likely to make a noticeable difference for you.

Varilux XR series varifocal lenses

Varilux XR series is Essilor’s premium varifocal design. Essilor describes it as its first eye-responsive varifocal lens, using prescription information and visual-behaviour data to help optimise how the two lenses work together as your eyes move between distance, intermediate and near tasks.

Essilor reports that nine out of ten wearers in its consumer study perceived instant sharpness at all distances, even while moving, and felt adapted by the first day. These are manufacturer study results and individual experiences vary, so we will always base our recommendation on your own prescription, previous varifocal experience and everyday visual needs.

Varilux XR may be worth considering if you move frequently between distance, screens and reading, want a premium varifocal with a generous usable field of vision, or have previously found progressive lenses restrictive. No varifocal design is ideal for everyone, and careful measurement and fitting remain essential.

Eyezen enhanced single-vision lenses

Eyezen lenses go beyond a basic single-vision design by taking account of how the eyes are used at different distances throughout the day. Eyezen Start optimises the lens across distance and near viewing, helping provide clearer, more comfortable vision away from the central viewing point. It can be a good everyday upgrade for people who want a more advanced single-vision lens.

Eyezen Boost adds a small amount of extra support in the lower part of the lens to reduce the focusing effort involved in prolonged close work and digital-device use. It is designed for single-vision wearers with visually demanding, screen-heavy lifestyles who are not yet ready for varifocals. We will advise whether Eyezen Start, Eyezen Boost or a conventional single-vision lens is the most appropriate choice for your prescription and symptoms.

Transitions GEN S light-reactive lenses

Transitions GEN S lenses are clear indoors and darken automatically outdoors in response to ultraviolet light. They can be combined with many single-vision and varifocal prescriptions, reducing the need to change constantly between clear glasses and sunglasses.

The latest GEN S technology is a clear improvement on many older photochromic lenses. Patients who tried an earlier generation, or a less advanced light-reactive product from another manufacturer, may have found that the lenses changed too slowly, stayed too dark indoors or did not provide the colour they expected. GEN S is designed to darken more quickly, return to clear faster and offer a more attractive choice of colours.

Transitions states that GEN S lenses darken in seconds outdoors and fade back in less than two minutes under its test conditions. They are available in eight colours. Performance varies with lens material, colour, temperature and ultraviolet exposure, so we will explain what to expect in everyday use.

At Actons, you do not have to choose from a colour chart alone. We have a Transitions GEN S demonstration kit with a sample lens in every colour and a UV light, so you can watch the lenses darken and return to clear in the practice. This lets you compare the colours against your chosen frame and see the speed of the change for yourself before ordering.

Transitions XTRActive New Generation

Transitions XTRActive New Generation is designed for people who want extra darkness outdoors and some activation behind a car windscreen. Unlike most light-reactive lenses, it responds to visible light as well as ultraviolet light, allowing it to develop a noticeable tint in the car where standard photochromic lenses usually remain much lighter.

It can be a particularly good option for patients who are light-sensitive, spend a lot of time outdoors or want more glare reduction while driving. Its advantages include greater darkness outdoors, activation behind the windscreen and strong everyday protection from bright light.

There are some trade-offs. XTRActive keeps a slight tint indoors, so it does not look quite as clear as GEN S, and it can take longer to return fully towards clear. It is also available in fewer colours. Although it can darken in the car, it may not replace dedicated prescription sunglasses for every driver or every lighting condition.

At Actons, we can compare XTRActive with GEN S and help you decide which matters most for you: the clearest appearance indoors and fastest return to clear, or extra darkness and in-car activation.

Crizal Sapphire HR coating

Crizal Sapphire HR is Essilor’s premium anti-reflection coating. It is designed to reduce reflections while improving resistance to scratches, smudges, dust and water, helping lenses stay clearer and easier to clean.

At Actons, we recommend Crizal Sapphire HR for its excellent clarity, strong resistance to scratches and smudges, and the reassurance of a market-leading two-year scratch guarantee. In practice, Essilor handles scratched Sapphire-coated lenses very generously, making this one of the strongest aftercare advantages available with a premium lens coating.

No coating makes a lens indestructible, so suitable cleaning and storage remain important. Every pair includes a cleaning cloth and solution, and you can bring the bottle back for unlimited free refills.

Looking After Your Glasses

Every pair includes a cloth and cleaning solution. Bring the bottle back for unlimited free refills, and visit whenever you need free adjustments.

Re-using Existing Frames

We can often fit new lenses into a frame you already enjoy wearing, provided it is in suitable condition. Because older frames can sometimes weaken or break during reglazing, we will inspect the frame first and explain the small risk before proceeding. You can also browse our current glasses frames if you would prefer a new frame.