A Finnish startup is trying to digitally rewrite traditional presbyopic and multifocal lens designs that have been used for more than two centuries. The goal is to make glasses automatically focus like the eyes of young people again, without relying on bifocal or progressive multifocal lenses. The company, called IXI Eyewear, has raised more than $40 million in funding, including investment from Amazon, and is about to launch a pair of smart glasses that can auto-focus in real time and position them in the high-end market.
The core technology of IXI is a liquid crystal lens that works in real time with eye-tracking sensors all over the frame. Composed of photodiodes and LEDs that emit invisible infrared light, these sensors capture eye reflections to determine where and how far the wearer is looking, then electronically change the equivalent curvature of the lens by changing the orientation of the liquid crystal molecules, thereby generating new diopters "on demand."
IXI CEO Niko Eiden said the solution is intended to "go beyond traditional optics." Modern progressive multifocal lenses essentially mix far, medium, and near powers in one lens, and cannot achieve a completely seamless transition. Therefore, they are prone to distortion on both sides of the lens, and users must also deliberately adjust their line of sight to pass through the narrow "clear channel." In contrast, IXI's autofocus lens no longer sets a fixed focus area, but continuously adjusts the focus. When reading menus, staring at the computer screen, or looking at distant street signs, the system will automatically complete the focus transition behind the scenes.
This design also frees up more usable lens area in farsightedness scenarios. Eiden pointed out that traditional progressive lenses often require the wearer to raise their sight through the upper part of the lens to see clearly in the distance, while the IXI solution allows the entire lens area to be used for distance vision, closer to the visual experience the wearer had when they were "a little younger." Different from the common heavy image of traditional electronic devices, IXI claims that its prototype weighs only 22 grams, which is roughly the same as an ordinary spectacle frame, and has a magnetic charging interface hidden in the temples, minimizing the impact of electronic components and batteries on the appearance.
Of course, this technology is not completely free. Eiden admitted that there is also a so-called "transitional mixed area" in the structure of the liquid crystal lens. The center of the lens is the clear area, and the edge part of the liquid crystal layer is not suitable for long-term gaze, but the central area is large enough to cover the field of view required for daily reading. From a user perspective, this means that they are dealing with another form of distortion distribution, but IXI attempts to design it so that these distortions go unnoticed most of the time.
In terms of safety, the system has a built-in emergency mode: once the electronic part fails, the lens will automatically return to the basic optical state, usually a far-sighted formula, to ensure basic long-distance vision. However, IXI still needs further testing to determine whether the product is suitable for use in driving scenarios, which is also related to the approval attitude of regulatory authorities.
IXI currently has about 75 employees in Finland and plans to establish a production line in the country. The first market will be Europe. The specific launch time will also depend on the progress of local regulatory approvals. In the United States, IXI needs to obtain FDA certification before it can be launched on the market. The company will only provide two to three basic frame shapes in the initial stage, and then cover more user groups through different widths. Although pricing has not yet been announced, the company has clearly positioned the product as a high-end consumer product.
IXI is not the only player in the world of adaptive optics. Japanese startups Elcyo and ViXion are also developing similar liquid crystal autofocus lenses. ViXion’s existing products require the wearer to achieve autofocus through a small hole window, while Elcyo’s design is closer to the appearance of ordinary glasses, but it is still in the development stage. In the academic world, a team from Stanford University has demonstrated "autofocus glasses" that utilize the principles of depth perception and real-time optical adjustment, demonstrating the feasibility and complexity of this route.
Meenal Agarwal, an optometrist and podcast host in Ontario, Canada, points out that variable focus glasses are scientifically possible, but engineering implementation is extremely challenging. Lenses must adjust focus quickly and accurately with little delay or noticeable blur, while also ensuring all-day battery life. Optical components, sensors and computing modules must be packed into frames that have a look and feel as close to ordinary glasses as possible, and meet medical and regulatory requirements. Amid multi-party exploration and fierce competition, whoever can take the lead in finding a balance between performance, comfort, appearance and compliance may seize the opportunity in the next-generation smart glasses market.