Cataract lens options
Understand the three main lens families, how they affect glasses use, and the separate decisions about astigmatism and mini-monovision.
Why reading vision changes with age · Lens replacement before cataract
How much might you rely on glasses?
| Lens family | Intended vision | Glasses expectations |
|---|---|---|
| Monofocal / Plus | One main focus; some enhanced designs extend intermediate vision. | Glasses generally needed for reading and often computer work. |
| EDOF | Mainly distance through intermediate. | Reading glasses expected; detailed computer work may also need glasses. |
| Trifocal | Distance, intermediate and near sweet spots. | Greatest potential to reduce glasses use across all three; some tasks still need glasses. |
Greater range can bring trade-offs, including halos, glare and reduced contrast. No lens guarantees spectacle independence or satisfaction. Suitability follows an individual examination and discussion.
Choose a range of focus, then consider astigmatism.
Monofocal
One principal focus, usually distance, with reading and often computer glasses needed. It generally has fewer optical side effects than multifocal designs, but is not immune to them. A near target is possible, with distance glasses then needed. Enhanced monofocals may modestly improve intermediate range; readers remain expected.
Extended depth of focus (EDOF)
Extends focus mainly from distance through intermediate. Reading glasses should be expected, especially for small print and sustained close work. Glasses may also be needed for computer work. Models differ in optical technology, contrast and halo profiles.
Trifocal
Aims to reduce glasses use for distance, intermediate and near tasks. The compromise can include halos, glare, starbursts and reduced contrast, particularly in dim light. Glasses may still help for small print, long reading sessions or residual prescription.
Toric: an option across all three designs
Toric corrects suitable regular corneal astigmatism; it does not add another focal distance. It must be aligned at a calculated angle. Rotation can reduce correction and sometimes requires repositioning. Residual astigmatism and glasses use remain possible.
Dry eye, previous corneal surgery or irregular astigmatism can reduce predictability. Not every eye or every model is suitable. A more expensive lens is not automatically the best choice for you.
Mini-monovision needs a separate discussion.
One eye is targeted for distance and the other slightly nearer. It may broaden useful vision but can compromise binocular distance sharpness or depth perception. Reading glasses may still be needed.
It is offered directly only to suitable patients who already routinely use monovision with glasses or contact lenses. For anyone else, it is considered only after a special contact-lens trial, which incurs an additional charge. This applies to monofocal and EDOF planning.
A successful trial does not guarantee the surgical result. Monovision with natural lenses (phakic monovision) differs from mini-monovision with implants (pseudophakic mini-monovision). The visual experience and satisfaction achieved with glasses or contact lenses cannot always be replicated after surgery.
Clareon Vivity.
A non-diffractive EDOF lens aimed mainly at distance and intermediate tasks, commonly assessed around 66 cm, with some functional near vision. It offers an extended range rather than three separate sweet spots.
Expect readers for close tasks, especially small print, prolonged reading, detailed work and dim light. Brief phone use without them is not a promise of comfortable book reading.
Reported bothersome light effects are generally low, but symptoms can occur and become severe. Alcon specifically warns that most Vivity recipients are likely to have significant loss of contrast sensitivity compared with a monofocal lens. Take particular care in dim light, fog or night driving, especially with oncoming traffic. Discuss essential night-driving needs before choosing.
Individual results differ; neither the lens nor further treatment guarantees satisfaction.
Download the full Vivity leaflet ↓Clareon PanOptix.
A trifocal lens with intended focal ranges at near (about 40 cm), intermediate (about 60 cm) and distance. These are three main visual sweet spots, not exact points that every patient experiences identically.
Reading ability depends on print size, contrast, light, viewing distance, eye health and adaptation. A good chart score is different from comfortable sustained reading. Readers may still help for fine print, prolonged close work and poor lighting.
Glare, halos, starbursts, reduced contrast and night-driving difficulties can occur even after uncomplicated surgery. Adaptation may help but is not guaranteed. Persistent blur or ghosting needs assessment for treatable causes. Lens exchange is additional intraocular surgery and cannot guarantee complete resolution or satisfaction.
Download the full PanOptix leaflet ↓Allow time for a different optical system.
All lens categories can cause visual phenomena. The eye heals and the brain adjusts to the implant, but persistent or troublesome symptoms need assessment.
See the anatomy and adaptation diagrams → · Read surgical risks and realistic expectations
Discuss your eyes and your priorities.
Contact Elizabeth, our practice manager, to arrange your consultation with George Voyatzis at Moorfields Private.
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Patient information from George Voyatzis FRCOphth, Consultant Ophthalmic Surgeon. Updated 2 November 2026. Your individual assessment, consent discussion and discharge instructions remain essential.