Extended Depth of Focus (EDOF) lenses are a modern advancement in 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 lens implantation typically takes just 8–10 minutes per eye, performed under local anaesthetic. The natural lens is gently removed and replaced with a personalised 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.
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 | RLE / Cataract – replaces natural lens | RLE / 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 | Spiral non-diffractive trifocal optics (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 | Limited correction for astigmatism |
| Injector System | Small incision | RayOne preloaded injector, 2.2 mm incision | Varies by model |
| 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, perfect 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.
At EuroEyes, we always tailor lens recommendations to suit each patient’s lifestyle and visual goals. For many, EDOF lenses offer the perfect balance between clarity, comfort, and practicality, especially for those who want excellent distance and mid-range vision with fewer visual side effects.
EDOF stands for Extended Depth of Focus. These lenses are designed to provide a continuous range of clear vision, especially at distance and intermediate zones, with fewer optical disturbances compared to multifocal lenses.
Most patients experience excellent 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.
EDOF lenses are ideal for patients undergoing cataract surgery or refractive lens exchange who want clear distance and intermediate vision with minimal visual disturbances. They’re especially suited to people who use screens or drive regularly.
Yes! EDOF lenses are clinically tested and approved for use in cataract and lens replacement procedures. At EuroEyes, we only use trusted lens brands backed by scientific evidence and patient success.
Most patients adapt within a few days to a few weeks. Because EDOF lenses offer a continuous range of focus rather than segmented zones, the transition tends to feel more natural compared to multifocal alternatives.
Specialized on Laser Vision Correction and Presbyopia Treatment (high volume surgeons each 2000 operations a year)
Performed the most ICL Implantations in Europe (treatment of myopia)
We have been awarded for performing smile, trifocal and ICL operations worldwide.
World Renowned. LEC London is a part of the acclaimed EuroEyes International Eye Group, with clinics in major global cities.
Expert Surgeons. Established 1993 with more than 30 years of experience in refractive and lens surgery
Performed the most Trifocal Lens (Zeiss) Implantations Worldwide (treatment of presbyopia)
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