If you already own a pair of glasses you love, a change in prescription does not always mean you need to replace the entire pair. In many cases, new prescription lenses can be fitted into your existing frame, allowing you to keep the style and fit you already know while updating your vision.

This service is often called reglazing glasses, lens replacement or fitting new lenses into existing frames. Whatever term you use, the principle is the same: the old lenses are removed and brand-new lenses are professionally made and fitted to your current frame.

You can read the full details on our Replace Lenses in Your Glasses service page, or go directly to choose your frame type and begin your lens upgrade.

Why replace the lenses instead of buying new glasses?

Buying a new frame can be exciting, and there are times when a new pair is the right choice. However, replacing the lenses can make more sense when you already own a frame that fits well, feels comfortable and suits you.

Common reasons for keeping an existing frame include:

• Your prescription has changed but the frame is still in excellent condition.
• You own a designer or premium frame that you do not want to replace.
• Your current lenses are scratched, damaged or no longer suitable.
• You want to upgrade to thinner, lighter or more advanced lenses.
• You are comfortable with the fit and do not want to start again with a different frame.
• You would like to convert suitable glasses into prescription sunglasses or light-adaptive glasses.

If your frame is badly worn, distorted or no longer fits correctly, a new pair may be the better investment. You can compare your options by browsing all Burghley & Co glasses.

Which types of glasses can have new lenses fitted?

Frame construction and condition both matter. A frame may look fine at first glance but still have weakness around the bridge, hinges or eyewires. That is why a professional inspection should take place before glazing begins.

Burghley & Co’s current online service is designed for suitable full-rim plastic and metal frames. You can select the correct frame type here.

Why should the existing lenses stay in the frame?

Customers are sometimes tempted to remove their old lenses before posting the frame, but it is better to leave them fitted.

Lenses that you have already worn successfully can provide useful information about the optical positioning and fitting of your current glasses. They also help confirm that the frame has previously worked for you in its present form. For this reason, Burghley & Co requires the existing prescription lenses to remain in the frame and to have been worn by the person placing the order.

Can I replace my lenses if my prescription has changed?

Yes. A prescription change is one of the most common reasons to replace lenses in existing glasses.

You will need to provide a clear copy of your current optical prescription before work begins. To understand the different lens types available, visit our prescription lens options guide.

For straightforward distance, reading or general-use prescriptions, our single vision lenses guide explains how single vision lenses work. Customers who need more than one viewing distance can learn more through our varifocal lenses guide.

Can I upgrade the lens material or add extra features?

Replacing the lenses is also an opportunity to improve them. The best option depends on your prescription, frame, lifestyle and visual needs.

Thinner and lighter lenses

Stronger prescriptions may benefit from a higher-index material, which can reduce lens thickness and weight when used with a suitable frame. Our high-index lens guide explains the differences between common 1.60, 1.67 and 1.74 lens materials.

Transitions® lenses

Suitable frames can be fitted with lenses that darken in response to ultraviolet light and return towards clear indoors. Read more in our Transitions® lenses guide.

Polarised prescription lenses

For sunglasses, polarised lenses can reduce reflected glare and improve visual comfort in bright conditions. Our polarised prescription lenses guide explains where they can be particularly useful.

Varifocal lenses

Many suitable existing frames can be fitted with varifocals, but the frame dimensions, prescription and available measurements all need to be considered. If you are unsure, review our varifocal lens information before ordering.

Do I need my pupillary distance?

Pupillary distance, commonly shortened to PD, is the distance between the centres of your pupils. It helps position the optical centres of the lenses correctly.

The measurements required depend on the type of lenses being ordered and the information available from your current glasses. Our PD explained guide gives a clear overview of why this measurement matters.

How does replacing the lenses in existing glasses work?

1. Check the service information. Start with the Burghley & Co lens replacement service page to confirm the basic requirements.
2. Choose your frame type. Select either full-rim plastic or full-rim metal through the Upgrade Your Lenses collection.
3. Select your new lenses. Choose the prescription lens type and any appropriate upgrades.
4. Provide your prescription. Upload a current copy during ordering or send it afterwards as instructed.
5. Pack your glasses securely. Leave the existing lenses fitted, put the glasses inside a protective case, then place the case inside a sturdy outer box.
6. Use tracked postage. Keep your proof of postage until the glasses have been received.
7. Frame inspection and glazing. The frame and prescription are checked before the new lenses are made and fitted.
8. Tracked return. Completed glasses are securely packaged and returned using Royal Mail Tracked.

How long does lens replacement take?

The turnaround begins once Burghley & Co has received your glasses, current prescription and any other information required to complete the order.

These are typical working times rather than guaranteed delivery dates. If a frame needs further assessment or additional information is required, the order may take longer. Completed glasses are returned using Royal Mail Tracked.

Is it worth replacing the lenses instead of buying new glasses?

It can be an excellent option when the frame is comfortable, structurally sound and still suits you. It is particularly appealing when you own a premium frame, have struggled to find another shape that fits as well, or simply do not want to replace something you still enjoy wearing.

However, replacing lenses is not automatically the right decision for every frame. Hinges, screws, coatings, plastic condition and general wear all matter. A heavily worn frame may not be a sensible place to invest in new lenses.

Burghley & Co inspects each frame before glazing begins. If the frame does not appear safe or suitable, you will be contacted before work proceeds.

Can designer glasses have their lenses replaced?

In many cases, yes. Designer frames are often one of the strongest reasons to consider lens replacement, especially when the frame was expensive, fits particularly well or is no longer easy to replace.

Brand name alone does not determine suitability. The actual construction, condition and shape of the individual frame matter more. A well-kept full-rim designer frame may be suitable, while a damaged or weakened one may not be.

How should glasses be packaged for lens replacement?

Good packaging protects the frame during its journey. Place the glasses inside a firm protective case. Then place the closed case inside a sturdy outer box with suitable packing material so it cannot move freely.

Do not send glasses loose in a mailing bag, paper envelope or soft pouch alone. Use a tracked postal service and retain your proof of postage.

Frequently asked questions

Related Burghley & Co guides

Explore these guides to understand your prescription and compare the lens options available: