Progressive Lens or No-Line Bifocals, Uses & Benefits

What Are Progressive Lenses

Progressive lenses have three prescriptions in one pair of glasses. That allows you to do close-up work (like reading a book), middle-distance work (like checking out a website on a computer), or distance viewing (like driving) without needing to change your glasses.

Both bifocal and progressive (varifocal) lenses allow for prescriptions for distance and reading to be used in a single lens. While bifocals offer a reading segment (normally in a 'D' shape), progressives include the benefit of a no line lens offering a seamless progression from reading, to intermediate to distance, making them perfect for all day wear.

Progressive Lenses

Distance, intermediate and near vision correction in a single pair of glasses.

Traditional Varifocal

While lens technology has progressed over the years, traditional (or conventional) progressive lenses offer 3 blended prescriptions correcting near, distance and inbetween vision, that's relatively easy to adapt to for new wearers.

However, as this is an older technology you'll find these lenses have medium levels of peripheral distortion and this may result in difficulty with adaptation when compared with a freeform progressive design.

As such, and due to negative points surrounding the traditional design, we no longer offer this lens. Instead, all our progressive lenses now offer superior freeform technology.

Rear Surface, Freeform Varifocal

Using the latest in lens manufacturing technology, rear surface freeform lenses are digitally optimised for you and your prescription and choice of frame. This results in a greater field of clear vision (up to 50% greater than traditional varifocals) with minimal soft focus and peripheral distortion. Another added benefit is that these lenses are very easy to adapt to.

Adapting to Progressive Lenses

When you're trying progressive lenses for the first time or perhaps have an updated prescription, you may need a short period of time to feel fully comfortable with the lenses. This adaptation period can vary from just a few minutes, a few days, or up to 1 month. For quicker adaptation, we recommend choosing a rear surface freeform progressive lens.

To speed up the adaptation period, we recommend wearing your new glasses around the house or office initially trying not to return to your old prescripiton glasses. For driving, it's recommended that you only use your new progressive lenses once you feel completely comfortable with them

Our Progressive Lenses

Our progressive lenses provide sharp vision at every distance - even in dimly lit conditions - eliminating the blurriness and low-light issues of ordinary progressive lenses.

We offer 3 progressive options, all with freeform technology.

Standard Varifocal

IOT Basic series H40 Design Freeform Progressive Lens

Our standard design is ideal for new and familiar progressive lens wearers, offering wide distance and near zones for natural eye movements, coupled with a smooth progression to near vision. Compromise between far and near vision has been efficiently balanced to provide the wearer with a comfortable all-purpose lens.

This hard lens design is ideal for general purpose where there is no intention for prolonged intermediate use.

Premium Varifocal

Optimize Acuform Design Freeform Progressive Lens

Our premium design provides tremendous clarity from distance through to near offering up to 20 percent wider corridors of vision with minimal soft focus and incredibly fast adaption. Produced with the latest Digital-Surfacing technology and software to effectively balance the visual field and provide wearers with a stable and generous focal area for distance, intermediate and near tasks.

This soft lens design is ideal for wearers that spend a lot of time with intermediate and near tasks.



Elite Varifocal

IOT Alpha series H45 Design Freeform Progressive Lens

Our elite design offers optimised Digital-Ray-Path technology with balanced power distribution between distance and near vision areas for enhanced vision across the whole lens including intermediate working distances.

This hard lens design is highly recommended for experienced and demanding wearers that are looking for an all-purpose progressive lens, generous at all distances with comfortable all day vision.


  • Sukhbeer Kaur

    really helpfull

  • Uttam Kumar

    very nice..

  • Sushma A

    this artical helped me a lot to understand progressive lenses

  • Gagan Sharma

    Nice and clear discription of progressive lenses… keep it up

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