When cataracts cause vision to become blurred, cataract surgery is often the best option for restoring clear sight.
Today, this procedure not only removes the clouded natural lens but also offers a variety of intraocular lens (IOL) options tailored to different visual needs - such as distance (e.g. reading road signs), intermediate (e.g. using a computer), and near (e.g. reading or using a mobile phone) requirements. These options include monofocal IOLs, extended depth of focus (EDOF) IOLs, Light Adjustable Lens, multifocal IOLs, and toric IOLs.
Extended Depth
Multifocal IOL
Monofocal IOL
EDOF IOLs have recently been developed and provide a continuous range of vision. They work by applying advanced optical principles to focus incoming light onto an expanded focal plane. As a result, they deliver smooth, continuous vision across multiple distances while offering a wider range of functional vision than monofocal IOLs, with minimal/ no glare, halos, or starburst effects compared to multifocal IOLs.
By meeting most everyday visual needs, EDOF IOLs help to reduce dependence on glasses and enhance postoperative visual quality.
Compared with monofocal IOLs, which focus on only one distance, multifocal IOLs provide multiple focal points. This design allows patients to see clearly at various distances, helping to reduce the need for glasses.
By enhancing visual convenience, multifocal intraocular lenses make daily activities easier and allow patients to enjoy greater spectacle independence in everyday life.
Monofocal IOLs are designed to provide clear vision at a single focal distance — most commonly for distance vision. For intermediate or near tasks, such as using a computer or reading and using mobile phones, glasses may be required.
This option is well suited for patients with simpler visual needs, or for those who require the best possible visual quality at a specific distance.