Extended Depth of Focus (EDOF) lenses are a intraocular lens technology designed to improve your range of vision after cataract surgery or refractive lens exchange. Unlike traditional bifocal lenses, which offer two fixed points of focus (typically near and far), or trifocal lenses, which add an intermediate zone, EDOF lenses create a smooth, continuous field of vision, from distance to intermediate and, in some cases, near. They do this by extending the eye’s natural depth of focus rather than splitting light into multiple focal points, which can reduce common side effects like halos or glare. The result is a more natural visual experience, especially in low-light conditions or when using digital screens. EDOF lenses are ideal for active individuals seeking greater visual freedom with fewer compromises.
The EDOF lenses implantation typically performed under local anaesthetic. The natural lens is gently removed and replaced with intraocular lens.
You’ll return home the same day, no overnight stay needed. Most patients notice sharper vision within 24–48 hours, with minimal downtime.
Uses micro-incision techniques to ensure fast healing, minimal disruption, and a reduced risk of complications.
From your first consultation to your final follow-up, we prioritise your comfort, safety, and visual outcome, every step of the way.
This in-depth comparison explores the differences between EDOF, Trifocal, and Monofocal lenses from visual performance to surgical technique.
| Feature | EDOF Lenses | Trifocal Lenses | Monofocal Lenses |
|---|---|---|---|
| Procedure Type | Cataract – replaces natural lens | Cataract – replaces natural lens | Cataract – replaces natural lens |
| Vision Range | Extended range – distance to intermediate, with good functional near | Full range – near, intermediate, and distance with three focal zones | Distance only |
| Technology | Enhanced monofocal optics with depth-optimised profile | 0% light loss | Fixed single focus |
| Contrast & Low Light | High contrast with minimal halos or glare | Good contrast, some potential for glare or halos | Excellent contrast in distance vision |
| Spectacle Independence | High — many patients reduce or eliminate glasses for most tasks | Very high — glasses rarely needed for everyday use | Low — reading glasses typically required |
| Astigmatism Correction | Yes — available in toric versions | Yes — with stable axis positioning | / |
| Injector System | Small incision | 2.2 mm incision | / |
| Ideal For | Active patients wanting sharp vision without multifocal halos | Those seeking full range of vision with minimal glasses | Patients focused on distance vision with fewer demands |
Curious how EDOF lenses compare to other implant options? The table below outlines the key differences between standard trifocals, and monofocal lenses, helping you make an informed decision based on clarity, flexibility, and long-term results.
| Feature | EDOF Lens | Trifocal Lens | Monofocal Lens |
|---|---|---|---|
| Distance Vision | ✔️ | ✔️ | ✔️ |
| Intermediate Vision | ✔️ | ✔️ | — |
| Near Vision | 🌓 | ✔️ | — |
| Low Light Performance | ✔️ | 🌓 | ✔️ |
| Reduced Glare / Halos | ✔️ | — | ✔️ |
| Glasses Independence | 🌓 | ✔️ | — |
| Astigmatism Option | ✔️ | ✔️ | ✔️ |
✔️ = Strong feature
🌓 = Partial benefit (e.g. “functional near vision” or “some correction”)
Choosing EDOF (Extended Depth of Focus) lenses means choosing visual freedom with fewer compromises. Here’s what makes them a standout option for cataract and lens replacement patients:
Enjoy improved focus from far to intermediate distances for driving, conversations, and everyday life.
Designed to minimise light scatter, EDOF lenses offer clearer night vision and fewer disturbances around lights.
Maintain contrast and clarity even in dim or challenging lighting, ideal for night driving or indoor environments.
Whether you’re using a computer, phone, or tablet, EDOF lenses are optimised for intermediate screen distances.
Many patients can enjoy most daily activities without the need for spectacles, especially at distance and mid-range.
EDOF lenses offer balance between clarity, comfort, and practicality, especially for those who want distance and mid-range vision with fewer visual side effects.
Most patients experience vision for distance and mid-range tasks without glasses. However, you may still need reading glasses for small print or close-up detail, especially in low light.
Trifocal lenses split light into three focal points (near, intermediate, and distance), which can sometimes cause halos or glare. EDOF lenses extend the range of focus in a smooth curve, offering a more natural visual experience with fewer side effects.
