If you’re thinking about trying varifocals or just curious about them, this article is for you. We cover everything you need to know about varifocal lenses, including their development history, the different types available, and the advantages and disadvantages of using these lenses.
Definitions & origins
Varifocal lenses offer seamless vision at all distances within a single lens and are designed to correct presbyopia.
The first patent for varifocal lenses, technically known as Progressive Power Lenses (PPL), was filed in the early 20th century. However, it wasn’t until 1955 that they became commercially available through Irving Ripps at Younger Optical, who introduced the ‘Younger Seamless Bifocal.’ As the name implies, these lenses were based on a bifocal design and featured a basic structure.
Modern varifocal lenses are designed with three distinct vision areas within a single lens:
Long distance at the top
Reading at the bottom
Intermediate in the middle
Due to this design, some peripheral distortion is normal. Higher-quality varifocals minimize this distortion by pushing it towards the lens edges, offering a wider field of vision and greater ease of use.
Basic varifocal designs are often considered 'one size fits all,' typically assuming a spherical prescription. This can make adaptation challenging for individuals with stronger prescriptions or high astigmatism. In contrast, modern ‘freeform’ lens designs provide a more customized experience through advanced computer-aided design and digital manufacturing.
With many lens design options available, selecting the right varifocal lens can be challenging. We currently offer four types:
Varifocal Advanced
Our entry-level varifocal lenses feature a contemporary Freeform lens design, delivering outstanding long-distance vision and a spacious reading area.
Elite HD
Elite HD lenses expand your field of vision at reading and intermediate distances by 30% compared to our Advanced lenses.
Their multi-aspheric freeform lens technology minimizes distortion at the edges, while binocular balancing calculations ensure a smooth power transition across the entire lens.
Supreme HD
Supreme varifocal lenses utilize advanced Digital Ray-Path technology to enhance your reading and intermediate vision by 20% compared to our Elite HD lenses.
They are easy to adjust to, minimize unwanted aberrations, and are particularly effective for desk work, tablet use, and reading. Supreme HD lenses are highly recommended for both new and experienced varifocal wearers.
Varifocal lenses: Pros & Cons
The primary benefit of varifocal lenses is that they provide clear vision at all distances with just one pair of glasses. For most people, they are the most convenient solution for addressing the need for different corrections for long distance, intermediate, and near vision. With varifocals, you don’t have to switch between multiple pairs of glasses or carry more than one with you.
However, some individuals may find the peripheral blurring, limited field of vision for intermediate and near distances, and the necessary head movements to see through the correct parts of the lens challenging. Adapting to varifocal lenses can take some time for new users, but most people adjust after a few days.
If you are getting varifocal lenses for the first time
If you’re using varifocal lenses for the first time, it may take a little while to adjust. Typically, this adjustment period ranges from a few days to a couple of weeks, and it could be longer for some individuals. If you’re still having difficulty adjusting to your new varifocals, we offer a 120-day tolerance guarantee. This allows you extra time to get accustomed to them. If you’re not satisfied with your varifocal lenses by the end of this 120-day period, you can return them for a refund.
If you have worn varifocal lenses before
If you’ve worn varifocal lenses before, you’re likely familiar with their use and what to expect. However, different suppliers may have slightly different designs, so you might experience a brief adjustment period as you adapt to our lenses. If your prescription has changed, it may also take some time to get used to.
While adjusting to your new varifocals, be cautious of stairs, curbs, and other obstacles at your feet. Ensure you’re comfortable wearing them indoors before using them for driving.