A multifocal IOL (intraocular lens) can correct astigmatism, but only when the lens has a toric design.
A toric multifocal IOL can correct astigmatism while also helping with near, middle, and distance vision. A standard multifocal IOL improves vision at multiple distances but does not correct astigmatism on its own.
At Perth Laser Vision, Dr Phillip McGeorge assesses each patient’s eye shape, prescription, lens health, and lifestyle to provide personal IOL recommendations and help achieve greater freedom from glasses.
What Is a Multifocal IOL?
A multifocal IOL is an artificial intraocular lens used to replace the eye’s natural lens during Refractive Lens Surgery (also known as Refractive Lens Exchange or RLE).
During Refractive Lens Surgery, the natural lens is gently removed and replaced with an artificial intraocular lens. These lenses are multifocal, designed to provide clearer vision across more than one distance.
- Near vision for reading.
- Intermediate vision for computer work and daily tasks.
- Distance vision for driving or watching television.
The goal is to reduce dependence on glasses, although some patients may still need glasses in the future for certain fine tasks.
Why Eye Problems Are More Common Over Age 50
The natural lens sits behind the coloured part of your eye. It becomes less flexible over time, which can make it harder to focus at different distances and may lead to age-related vision changes such as presbyopia and cataracts.
In fact, more than 90% of Australians aged over 55 report eye conditions, including myopia and macular degeneration.
Multifocal IOL: How Does it Work?
A multifocal IOL works by splitting or distributing light across different focal points, allowing your eye to focus at near, intermediate, and far distances.
This is different to a monofocal lens, which provides one main focal point. Patients with monofocal IOLs choose either distance vision or near vision, and use glasses for other distances.
After Refractive Lens Surgery, your brain will gradually adapt to using the new visual information. You may notice halos or glare around lights, especially at night.
This adaptation period is normal. Symptoms often become less noticeable as your brain adjusts, but they are important to discuss before surgery.
Quick Refresher: What Is Astigmatism?
Astigmatism is a common focusing problem that occurs when the cornea (your eye’s clear outer layer) has a more oval shape rather than a smooth, round curve. This uneven shape means that light does not focus evenly on the retina.
Astigmatism can cause blurred or distorted vision at all distances. It can affect reading, computer work, driving, and night vision.
This is why astigmatism needs to be properly measured and corrected. Leaving it untreated means you may still need glasses, even after Refractive Lens Surgery.
Can Multifocal IOLs Correct Astigmatism?
Multifocal IOLs can correct astigmatism, but only with toric lenses. The “toric” component compensates for the uneven corneal curve by adding astigmatism correction into the lens itself.
This means the lens must be positioned precisely. Even small alignment differences can affect your vision quality.
For this reason, detailed pre-operative testing is essential. Your surgeon needs to measure the cornea, prescription, eye length, tear film and overall eye health before selecting the most suitable lens.
Getting Technical: Toric Lenses Explained
A toric multifocal IOL has slightly different curvatures across different parts of the lens surface. One direction has more focusing power than the other, allowing it to balance out the uneven shape causing astigmatism.
The Benefits of Multifocal IOLs for Patients With Astigmatism
For suitable patients, a toric multifocal IOL offers several quality-of-life benefits:
- Reduced reliance on glasses or contact lenses.
- Clearer vision across near, middle, and far distances.
- More comfort when reading, driving, travelling, and using the computer.
- Long-term visual stability.
- A single solution for both presbyopia and astigmatism.
Importantly, artificial intraocular lenses are designed to be permanent, so you should experience these benefits well into old age.
Cataracts cannot form because the natural lens is completely removed. And unlike contact lenses, IOLs live inside the eye, requiring no maintenance.
Are Multifocal IOLs Suitable For Everyone With Astigmatism?
A multifocal IOL is not the right solution for every patient with astigmatism and vision problems.
Suitability depends on the degree of astigmatism, the shape of the cornea, and the health of the retina. Tear film quality is also important because dry eyes can affect visual clarity after surgery.
Lifestyle matters as well. Some patients do more night driving. Others rely heavily on detailed near vision for work or hobbies.
Multifocal lenses can significantly reduce dependence on glasses, but they do not guarantee perfect vision in every situation.
How to Know if Multifocal IOLs are Right for You
A personalised assessment is the safest way to decide whether a toric multifocal IOL is the right option. In some cases, Dr Phillip McGeorge may recommend another lens type that provides a better balance of clarity and comfort.
Start with our LASIK suitability quiz, and our team will provide more information about your options.
What to Expect From Refractive Lens Surgery With Multifocal IOLs
Dr Phillip McGeorge typically performs Refractive Lens Surgery as a one-day procedure. Before surgery, your eyes are carefully measured to determine the most suitable multifocal IOL power and astigmatism correction.
Before Surgery
Successful outcomes with a multifocal IOL rely on careful planning. Even small differences in eye measurements can influence lens selection and visual quality after surgery.
At Perth Laser Vision, we use detailed diagnostic testing to assess:
- Corneal shape and astigmatism.
- Lens power requirements.
- Tear film quality.
- Overall eye health and suitability.
Dr Phillip McGeorge and the team use this information to tailor treatment to your eyes, lifestyle, and visual goals.
On the Day
Anaesthetic eye drops are used to numb the eye. Light sedation may also be offered to help you relax during treatment.
The procedure itself is precise and gentle. Dr McGeorge removes the eye’s natural lens through a very small opening before positioning the selected artificial intraocular lens in its place.
After Surgery
Most patients notice visual improvement within a few days, although your vision may sharpen over the following weeks as healing progresses and your brain adjusts to multifocal vision.
Your surgery care team will guide you through eye surgery aftercare and recovery, including:
- Using prescribed eye drops.
- Follow-up appointments.
- Returning to driving, work, and daily activities safely.
Our goal is to give you more independence, comfort, and confidence.
A Personalised Approach To Clearer Vision
For patients with astigmatism, a toric multifocal IOL may provide clearer vision across multiple distances and reduce dependence on glasses.
The key is choosing the right lens for you. Factors such as corneal shape, eye health, work demands, and visual expectations all play an important role in your quality of life after Refractive Lens Surgery.
If you are curious about artificial intraocular lenses or want to learn whether multifocal IOLs can correct astigmatism in your case, you are always welcome to contact Perth Laser Vision on (08) 9218 7666 or via email at [email protected].
