Compare IOLs: where will you still need glasses?

A book, a computer, the view down the street. Start with what you want to see without glasses — then look at the differences that matter beyond distance.

Everyday distances: phone around 35–50 cm, computer around 60–100 cm, distance from about 2 m
Book & phoneAround 35–50 cm
ComputerAround 60–100 cm
DistanceAround 2 m and beyond
Everyday examples, not exact boundaries of focus or a simulation of vision after surgery.

Compare the broad pattern

More dots mean a more favourable result in that row. Read across a row; do not add the rows into one overall lens score.

The dots are an editorial guide to the broad pattern, not measured clinical scores, percentages or a promise for a particular model or eye.

What matters to youMonofocalEnhanced monofocalEDOFFull range / trifocal
Distance visionAbout 2 m and beyondExcellent — the benchmarkExcellentExcellentVery good — the image may feel slightly softer
Intermediate visionComputer, about 60–100 cmGlasses usually neededOften usable without glasses*Usually goodUsually good
Near visionBook and phone, about 35–50 cmGlasses usually neededSome improvement — reading glasses usually remainUseful for some near tasks — fine print often needs glassesUsually good
Spectacle independenceAcross everyday activitiesLow — glasses for nearModerate — some improvementHigh for distance and intermediate — reading glasses often remainHighest — most everyday tasks
Night visionMore dots → fewer night-time optical effectsExcellent — lowest riskVery goodGoodReduced — halos are more common
Halos and glareMore dots → fewer halos and less glareUsually minimalUsually lowModerate in this overviewMore common
Contrast sensitivityMore dots → better preserved contrastExcellentClose to a standard monofocalGoodLower in this overview
Ease of adaptationMore dots → usually easier to adaptUsually little or noneUsually little or noneSome — days to weeksMore — weeks to months

Monofocal

Distance visionAbout 2 m and beyond
Excellent — the benchmark
Intermediate visionComputer, about 60–100 cm
Glasses usually needed
Near visionBook and phone, about 35–50 cm
Glasses usually needed
Spectacle independenceAcross everyday activities
Low — glasses for near
Night visionMore dots → fewer night-time optical effects
Excellent — lowest risk
Halos and glareMore dots → fewer halos and less glare
Usually minimal
Contrast sensitivityMore dots → better preserved contrast
Excellent
Ease of adaptationMore dots → usually easier to adapt
Usually little or none

Enhanced monofocal

Distance visionAbout 2 m and beyond
Excellent
Intermediate visionComputer, about 60–100 cm
Often usable without glasses*
Near visionBook and phone, about 35–50 cm
Some improvement — reading glasses usually remain
Spectacle independenceAcross everyday activities
Moderate — some improvement
Night visionMore dots → fewer night-time optical effects
Very good
Halos and glareMore dots → fewer halos and less glare
Usually low
Contrast sensitivityMore dots → better preserved contrast
Close to a standard monofocal
Ease of adaptationMore dots → usually easier to adapt
Usually little or none

EDOF

Distance visionAbout 2 m and beyond
Excellent
Intermediate visionComputer, about 60–100 cm
Usually good
Near visionBook and phone, about 35–50 cm
Useful for some near tasks — fine print often needs glasses
Spectacle independenceAcross everyday activities
High for distance and intermediate — reading glasses often remain
Night visionMore dots → fewer night-time optical effects
Good
Halos and glareMore dots → fewer halos and less glare
Moderate in this overview
Contrast sensitivityMore dots → better preserved contrast
Good
Ease of adaptationMore dots → usually easier to adapt
Some — days to weeks

Full range / trifocal

Distance visionAbout 2 m and beyond
Very good — the image may feel slightly softer
Intermediate visionComputer, about 60–100 cm
Usually good
Near visionBook and phone, about 35–50 cm
Usually good
Spectacle independenceAcross everyday activities
Highest — most everyday tasks
Night visionMore dots → fewer night-time optical effects
Reduced — halos are more common
Halos and glareMore dots → fewer halos and less glare
More common
Contrast sensitivityMore dots → better preserved contrast
Lower in this overview
Ease of adaptationMore dots → usually easier to adapt
More — weeks to months

* Compared with a standard monofocal. Glasses are still usually needed for close reading.

Adaptation times are broad orientation, not a deadline. Many people use their vision comfortably sooner, while their perception of halos can continue to change over several months.

And what about contrast and lights at night?

Being able to read without glasses is not the whole decision. The ease of seeing faint details and how lights look at night also matter.

See what glare, halos and starbursts can look like →

Monofocal

Usually fewer halos and other optical side effects than with multifocals. The narrower range of focus is the main limitation.

Enhanced monofocal

Some extra screen vision while aiming to keep a monofocal-like visual experience. Check the evidence for the exact model.

EDOF

The category includes different optical designs. Contrast, halos and near vision must be compared model by model.

Full range / trifocal

More opportunity to read without glasses. Halos and glare are more common than with monofocals, and contrast can be reduced.

What changes the picture?

The particular model, eye health, accuracy of the result and distance to the task all matter. A monofocal can also be targeted for near vision. Choosing a different focus in each eye — monovision — changes this comparison. How the focus is chosen →

Questions for your surgeon

  • Which options fit my eye health and daily needs?
  • What would I still need glasses for, and what might I notice at night?
  • If my vision differs from the plan, what can be checked or corrected?

Sources: ESCRS cataract-surgery guideline; model-level FDA evidence: PanOptix, Vivity, Symfony, Synergy, PureSee.

Next step: Take the discussion questionnaire. It will not choose a lens; it will help you identify priorities and questions to discuss with your surgeon.

IOL Adviser provides independent education and decision preparation. It does not diagnose, prescribe, or replace an examination by an ophthalmologist. Study averages cannot predict one person’s result.