Bifocal glasses allow clear vision at both distance and reading within one pair of glasses. They can be thought of as ordinary prescription lenses with an additional reading segment at the bottom of the lens. This dual-functional design eliminates the need to switch between different glasses for near and far viewing, providing a convenient solution for those with presbyopia.
The right size frames
With thousands of frames to choose from, how do you choose a pair of glasses that will fit correctly? On this page, you'll learn two methods for choosing a great-fitting frame, without having to try them on first. These tips are extremely handy if you are considering purchasing your next pair of glasses on the internet. If you do decide to buy online, it is advisable to choose a supplier that offers an exchange or return service, just in case!
Calculate Your Frame Width
Determining your frame width is crucial for selecting glasses that fit well and look great. It's a simple step that guides you to the ideal eyewear size for optimal comfort and style. Follow these steps for a perfect fit:
Measure the width of one lens to find your eye size. Multiply your eye size by 2.
Measure the width of the bridge (the part over your nose).
Add 11mm to account for the frame's arm width from the front.
Example: If your eye size is 50mm and your bridge width is 20mm:
Double Eye Size: 50mm x 2 = 100mm
Add Bridge Width: 100mm + 20mm = 120mm
Add for Arms: 120mm + 11mm = 131mm
Your ideal frame width is 131mm(+ or - 4mm for flexibility).
Our Helpful Sizing Tool
| Size | Measurement (mm) |
|---|---|
| Extra Small | 115-125 |
| Small | 125-135 |
| Medium | 135-145 |
| Large | 145-150 |
| Extra Large | 150-155 |
Our sizing tool simplifies the process of finding the perfect glasses by categorising them into four sections: Extra Small, Small, Medium, Large, and Extra Large. With just a few clicks, you can find the size that will provide the best fit and comfort. Our tool helps us deliver glasses that fit well and look great, and it's available under the "size" dropdown on our catalogue pages. If you're looking for something more specific, you can adjust the sizing sliders under the "Advanced sizing" option. Find your perfect pair with ease using our sizing tool.
Finding your frame size
When selecting a new pair of glasses, it's important to know your frame size to ensure a comfortable and proper fit. This diagram illustrates where to find the size measurements on your current pair of glasses. Typically, these measurements are located on the inside of the arm and are listed in millimeters. The first number represents the lens width (Eye size), the horizontal diameter of one lens6. The second number is the bridge width, the distance between the two lenses. Lastly, the third number indicates the length of the arm. To find the best fit, compare these measurements to the size specifications of the new glasses you are considering.
The number on the left-hand side of the square box is the "Eye Size" and is sometimes referred to as the "A" measurement. This is the width of the lens at its widest point measured in millimetres (see A in the diagram below).
The number on the right-hand side of the square box is the "Bridge Width" and is sometimes referred to as the "DBL" (distance between lenses). This is the distance between the two lenses measured in millimetres.
You may also find a third, three-digit number. This is the "Arm Length". The arm length is measured in millimetres from the attachment screw to the tip of the arm. The measurement is made before the bend is put into the arm.
Lens Depth
You may have noticed that thus far, we have not mentioned the Lens Depth. This measurement will largely depend on the style of frame you decide upon and in many cases, is not required to identify a good-fitting frame. However, if you are choosing glasses for bifocals or varifocals, be mindful that the shallower the frame is, the less area there will be available for the reading element of your lens.
When purchasing Varifocals we recommend a Lens Depth of at least 27 millimetres. For this reason, at Spex4Less, Varifocal lenses will not be available to purchase on frames with a lens depth of fewer than 27 millimetres.
Filters
What are the different types of bifocals?
Standard Bifocals - £37.97
Our most common bifocal is the D28 bifocal lens. These are distance lenses with a 28mm wide reading segment which looks like a letter "D" on its side. The reading segment is set at standard 3mm to 4mm below the horizontal centre line of the frame.
Rounded Bifocals - R28 - £57.97
As the name suggests, the round bifocal is round at the top. We use R28 bifocal lenses which is a distance lens with a 28mm round reading segment. As the lens is cut away to fit the frame this gives the appearance of a "Half Moon" or "Semi Circle" shape.
Rounded Bifocals - R35 - £114.97
We use R35 bifocal lenses which are a distance lens with a larger 35mm round reading segment which provides a wider scope of vision for a close up view.
Discover the Benefits of Bifocals
Find the Ideal Balance of Vision and Comfort
At Spex4less, we pride ourselves on exceptional customer service. Each pair of glasses undergoes meticulous quality checks to ensure your utmost satisfaction. If you have any concerns or queries, our dedicated team is always ready to assist.
Customised for Your Lifestyle
At Spex4less, we're dedicated to providing you with a seamless and professional experience. Don't just take our word for it—check out our Trustpilot reviews where we have a 4.9 star rating from over 27,000 reviews. We're proud to be ranked #1 for online glasses in the UK! ranked #1 for glasses online.
Innovative Design, Timeless Elegance
By purchasing our products in large volumes, we're able to secure significant savings, which we then happily pass on to you, our valued customers. This approach allows us to produce high-quality products that fit a wide range of budgets, ensuring you don’t have to compromise on quality for affordability.
Lens Coatings for Enhanced Performance
We recognize the challenges of online shopping, so we proudly offer a 100% satisfaction guarantee to ensure your peace of mind. If you're not completely happy with your order, simply contact our customer service team within 7 days, and we'll be dedicated to resolving your concerns promptly.
Experience Hassle-free Vision
We are committed to delivering your glasses as quickly as possible. Our range of delivery options includes several reputable courier services to meet your needs. For urgent requests, including weekend deliveries, please inform us and we will make every effort to accommodate your requirements.
Committed to Quality and Comfort
all of our products are ordered and manufactured in the uk, we have a modern and fully equipped labatory in house with all the latest industry leading equipment and manufacture all ur glasses in house, mention we have over 17 years in business and 2006
Why upgrade to Bifocals?
Enhance your vision experience with bifocal lenses. Why switch between glasses when bifocals simplify your vision. Embrace the seamless transition that bifocals offer, bringing the world into focus, regardless of the distance. It's more than just convenience; it's about living without boundaries. If you like the sound of bifocals then you’ll love varifocals!
Eliminate Multiple Pairs of Glasses
Upgrading to bifocals means you no longer need separate glasses for different tasks. This streamlines your eyewear collection and reduces the hassle of constantly switching between glasses.
Presbyopia Correction
Bifocal lenses are specifically designed to address presbyopia, a common age-related condition that affects near vision. With bifocals, you can enjoy sharp vision for both distant and close-up tasks without needing to switch between different pairs of glasses.
Helpful Optical Experts
Our optical service team with extensive knowledge in eyewear are always available to assist you. If you have questions about lens options or need guidance on selecting the ideal pair of glasses to suit your requirements, our team is here to offer expert advice, ensuring you make the right decision on your eyewear selection. For further assistance, please contact us at 0151 632 6611 or via email at [email protected]
A Variety Of Lens Types To Choose From
We offer a variety of lens types, including single-vision, bifocal, and varifocal lenses, as well as specialty lenses such as photochromic lenses and anti-fatigue lenses.
We also offer a range of lens coatings and enhancements, including anti-glare coatings, blue light coatings , and scratch-resistant coatings.
Our lenses come with a 100% satisfaction guarantee, providing you with the confidence to shop with us knowing that your satisfaction is our top priority.
Frequently Asked Questions
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Bifocal glasses feature multifocal lenses designed for individuals who require prescriptions for both distance and reading. These lenses incorporate a distinct segment at the bottom for reading, while the upper portion is tailored to your distance vision needs.
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Anyone who has 2 pairs of glasses for distance and reading. Opting for bifocals eliminates the need for multiple glasses for different tasks, simplifying your eyewear selection and minimising the inconvenience of switching between frames.
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Yes! We offer a variety of coatings for bifocals, including Blue Light protection, Multi Anti-Reflective and Hydrophobic+.
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Absolutely, you can get bifocal lenses fitted into your current or old frames. We specialize in providing high-quality lens upgrades, including bifocals, for your existing eyewear. To learn more about our reglazing services and to start the process, please visit our Reglaze Page. Here, you'll find detailed information on how to enhance your favourite frames with new bifocal lenses.