Bifocal Multifocal Contact Lenses A Complete Guide

A multifocal contact lens does not change focus. It shows your eye several powers at once and lets your brain pick. Once you understand that, almost everything people find strange about them makes sense — including why adaptation takes weeks and why contrast drops slightly at night.

Simultaneous vision, not alternating

With progressive glasses you move your eyes: look down to read. A contact lens moves with your eye, so that trick is unavailable.

Instead, a multifocal projects the distance image and the near image onto your retina at the same time. Your visual cortex learns to suppress whichever one it does not need. That learning is real and takes one to two weeks, sometimes longer.

The cost of that solution is a small loss of contrast, most noticeable in dim light. It is physics, not a defective product.

The designs

Aspheric centre-near

Near power in the centre, distance further out. The most common soft lens design. Strong for reading and screen work.

Aspheric centre-distance

The reverse. Favours distance vision and daytime driving. Many fittings use centre-distance in one eye and centre-near in the other, based on ocular dominance.

Segmented bifocal

Two defined zones with a visible line, like a bifocal spectacle lens. Almost exclusive to rigid gas permeable lenses, which stay oriented thanks to ballast. The cleanest optics of any option, at the price of rigid lens adaptation.

Monovision

Not a multifocal at all: two single-vision lenses, one set for distance and one for near. Cheap, simple, and it works for a lot of people.

What it sacrifices is binocular vision and depth perception. That makes it a poor choice if you drive at night often or play ball sports, and a perfectly good one otherwise.

What adaptation actually looks like

Being straight about this: a multifocal fitting rarely succeeds on the first attempt, and that is normal.

Expect two or three trial lenses before the combination is right
Intermediate vision can feel soft for the first few days
Night-time halos usually reduce as your brain adapts, but may not vanish entirely
If nothing has improved after three weeks, that is a parameter problem, not a patience problem — go back

This is why a multifocal fitting is billed separately and costs more than a spherical one. It is genuinely several appointments.

Modalities and what is available

Daily disposables — the most hygienic and convenient, the most expensive per year
Monthly silicone hydrogels — the bulk of the market, better annual cost, needs a care routine
Rigid and scleral — for maximum optical quality or an irregular cornea

There are also toric multifocals, for presbyopia and astigmatism together. There are fewer of them, they cost more, and the fitting is the most demanding there is — but they exist. Do not assume you are out of options because you have both. See toric lenses.

Across brands, the monthly families from CooperVision and Alcon and the daily families from Alcon and Johnson & Johnson cover nearly every case. See the brand comparison and the Alcon range.

Reading the numbers on your prescription

A multifocal prescription adds an ADD power — the extra magnification for near work, usually written as LOW, MED or HIGH, or as a figure like +1.50. It often differs between eyes.

You may also see a dominance notation (D or ND). That is the fitter recording which eye leads for distance. More in understanding your prescription.

If you tried them years ago and hated it

Worth trying again if it was more than about five years back. The current optical designs are not the ones from the previous generation, and the arrival of daily disposable multifocals changed the calculation for a lot of part-time wearers.

Practical middle ground some people land on: multifocals for most of the time, plus a pair of single-vision distance glasses kept in the car for night driving. That combination is underused and solves the one real weakness.

Broader context in contact lenses for presbyopia.