High Index Lenses

Our independent status means we are not tied to a single manufacturer or supplier.   This allows us to offer an unprecedented range of products from the world’s leading lens suppliers that are individually tailored to suit your specific needs and requirements, all at competitive prices; like for like cheaper than the large chains.


Single Vision

These are corrective lenses with the same prescription over their entire surface and are available in an extensive range of powers and materials.   These are generally used for a single task such as distance, reading or computer for example.


Bifocals are used when you have two different prescriptions that you wish to correct in a single pair of spectacles.    Usually these are made with a distance correction in the upper part of the lens and a smaller reading segment in the lower part of the lens.   They can however be made with other combinations such as computer distance in the top and reading in the bottom.

The reading segments are available in various different shapes and sizes dependant on your requirements.    The dispensing optician will discuss this with you and can demonstrate their appearance and how they work.

Multifocals (Varifocals)

These are lenses that have a gradual change of power across the lens surface.   Generally the distance point is fitted directly in front of the pupil.    As you look further down the lens, the power changes or alters so that you can see intermediate distances and close up.

The benefit of this lens type is that there are no obvious dividing lines on the lens that some people can find distracting.    Due to modern technological advances these lenses can be put into virtually any frame shape or size and are designed to minimize any peripheral distortion.

The dispensing optician will discuss with you your lifestyle, occupation and hobbies to determine which lens design is most tailored to your requirements.


Occupational Lenses

For those patients who have visual specific occupations, a special lens can be used to fit their requirements.

A variation of intermediate, near and very close vision for example, can be incorporated into a specially designed bifocal or multifocal.

Corrective spectacle lenses for sports such as golf, snooker or shooting are also available.

Lens Materials

It is important once you have chosen your spectacle frame that a suitable lens for your prescription and frame is chosen.

Traditionally spectacle lenses were made in glass that was tough and durable.   Glass is still available in single vision, bifocal, and multifocal.   Thinner glass lenses are available up to a refractive index of 1.9 that can reduce the edge thickness by up to 45%.

High Index Glass Lens

Thin and light alternatives are widely available in plastic, polycarbonate and trivex materials making glass less widely used.    Concerns about these lenses scratching more easily than glass are invalid due to scratch resistant Hard Coating that can be applied.   As a general rule, if you are long sighted your lenses are thickest in the middle, and the opposite is true if you are short-sighted (the lenses are thickest at the edges).

Polycarbonate is a very impact resistant and durable lens that is slightly thinner than either a standard plastic or crown glass lens.   Supplied with a hard coating and natural UV protection it is suitable for spectacles that may need to be tough and durable due to occupation or hobbies.

Polycarbonate or Trivex (Trilogy) can be coated with an anti reflection coating, tinted or be ordered as photochromic.   Available in single vision, bifocal or multifocal, it is recommended for tennis, field sports and water sports.

The higher the refractive index of a lens material, the thinner it is in general.    Other factors however do affect the finished thickness.   Thinner plastic lenses are available with refractive indices of 1.6, 1.67 and 1.74 offering a lightweight thinner alternative for optimum comfort and cosmetic appearance.   Plastic lenses can be coated with a UV protection, Hard Coating or Anti Reflection coating and tinted to suit your needs.   They can also be photochromic or polarised.

Lens Treatments / Coatings


Used on a plastic lens for added resistance against surface scratching and can be combined with an Anti Reflection Coating.

Anti Reflection Coating (HMAR)

Eliminates reflections from the lens surface and reduces ghost rings at the edge of thicker lenses.    The cosmetic appearance is improved, as the lens appears invisible.   Recommended for lenses within rimless, semi rimless (supra) and with thinner lens materials, the HMAR reduces glare and is ideal for driving and for working on a VDU screen.    All our anti-reflection lenses include the latest technological development – a super-hydrophobic coating, which can now make your lenses resistant to condensation, water-repellent and easier to clean.

Anti Reflection Lenses

UV block

UV protection is a necessity for a pair of sun spectacles as it protects the eye from harmful Ultra Violet radiation.

A UV coating is highly recommended for patients who have had a cataract removed.   On removing the cataract the eye’s natural protection from UV radiation is lost.   It is therefore important to have the coating on the spectacles to protect the retina.

Transitions lenses

Transitions lenses protect your eyes by blocking 100% UV rays, 100% of the time.

Transitions adaptive lenses are satisfying millions of spectacle wearers across the world.   With the widest variety of lens designs and materials to choose from, Transitions adaptive lenses offer a distinct advantage over ordinary clear lenses.

Transitions adaptive lenses can help you through your busy day.   This dynamic eyewear is designed to be worn indoors and to automatically adapt when outdoors, to give you a more comfortable viewing experience while protecting your eyes from damaging UV light.   Beware of cheaper copies as these will be slower reacting and offer less protection, ask for Transitions by name.


Polarising Lenses

These reduce glare and are ideal for water based activities such as sailing and fishing.   They also eliminate reflections from wet road surfaces making them ideal for driving.    Polarised lenses are available in both standard and thinner lightweight materials, usually in brown or grey.

Transition Lenses

Essilor Visioffice

The World's First Universal 3D Measuring System

Personalised Lenses

Premium spectacle lenses today are nothing like the lenses of just a few years ago when their high-quality design was generic enough to be suitable for all types of patients, regardless of their prescription.

As with most things, spectacle lenses have evolved and new technology is used to manufacture them.   Your eyes are very unique and studies have shown that no two are ever the same.   This has been used to develop a new generation of lenses that can be made and personalised uniquely for your eyes.   This means your vision will be greatly improved and will be more comfortable, highly contrasted and more dynamic.

There are several different levels of lens personalisation available to you today, in addition to you standard prescription.   We can take into account your visual behaviour, if you are a head mover or an eye mover, your choice of frame and how you wear it and for the ultimate personalisation, we can even measure your eye rotation centre.

To make your personalised lenses, we will need to take some additional measurements but these are quick and completely non-invasive thanks our investment in the latest eye and frame measurement equipment.

There are a number of personalised lenses available today including single vision and Varilux lenses.   Why not include personalised lenses in your next pair of spectacles and you’ll soon be enjoying the instant and effortless vision that is sharper and crisper than ever before.

The Visioffice System is Essilor’s all-encompassing measuring system that allows opticians to obtain every possible parameter required for modern lenses – with extreme accuracy.   This unique collaboration between Essilor and Activisu is a quantum leap in quality and convenience.   Visioffice also encompasses a unique measurement called eyecode that allows you to go one step further in terms of lens personalisation by measuring the Eye Rotation Centre (ERC).

Whatever your needs, the optometrist and the dispensing optician will be happy to discuss the options and help you select the right spectacle lenses for you.

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