Can Cataracts Return After Surgery

Cataract surgery is a procedure that removes the clouded lens from the eye and replaces it with an artificial lens. Since the affected lens is taken out completely, cataracts cannot actually return. 

However, some people notice vision changes months or even years after the procedure, which can cause confusion about whether the cataract has come back. The most common reason for this is a condition called posterior capsule opacification (PCO), which is often referred to as secondary cataracts. While it can cause similar symptoms to cataracts, it isn’t the same thing. 

Understanding why this happens and how it’s treated can help clarify what to expect after cataract surgery. In this blog, we’ll discuss the vision changes that you can experience after your procedure, treating these “secondary cataracts,” if cataracts can occur in the other eye, and what to expect in the longer term.

Why vision changes can occur after cataract surgery

During cataract surgery, the natural lens of the eye is removed, but a thin membrane that surrounds it, known as the lens capsule, is usually left in place. This capsule helps to hold the artificial lens in position and support the structure of the eye.

Sometimes, months or even years after the procedure, cells can begin to grow across the back part of this capsule, making it cloudy. This is what is known as posterior capsule opacification (PCO). Since it causes vision to become blurry or hazy, similar to the way a cataract does, it is sometimes referred to as a “secondary cataract.” However, it is not the same as a cataract.

PCO does not develop in everyone, but when it does, it can cause a noticeable decline in vision. Many people experience blurred or cloudy vision that gradually worsens over time. Sensitivity to bright lights is also common, making it difficult to see clearly in sunlight or under certain types of lighting.

Some people notice glare or halos around lights, particularly at night, which can make driving or navigating in low-light conditions more challenging. Overall, there is often a general sense that vision is deteriorating again after initially improving following cataract surgery.

These symptoms can be frustrating, but they are not a sign that the cataract has returned. Instead, they indicate that the capsule behind the lens has thickened or become opaque over time.

How posterior capsule opacification (PCO) is treated

If PCO develops, the standard treatment is a YAG laser capsulotomy. This procedure is designed to restore clear vision by creating a small opening in the cloudy capsule, allowing light to pass through properly again.

The procedure itself is typically quick and does not require any incisions or physical removal of tissue. A laser is used to precisely create the opening in the capsule, and most people find that their vision improves almost immediately or within a few hours. Since the capsule does not regenerate, once it has been treated with a YAG laser, the issue should not return.

YAG laser capsulotomy is generally considered a one-time procedure for most people who develop PCO. While some mild floaters can be present for a short period afterwards, these usually clear up quickly. The vast majority of people find that their vision returns to what it was after cataract surgery once the PCO has been treated.

Can cataracts develop in the other eye?

If only one eye has been treated for cataracts, the other eye can still develop one over time. 

Cataracts are a progressive condition caused by the natural ageing of the eye’s lens, so if one eye has already required surgery, it is possible that the other will eventually as well.

The timeline for this varies. Some people develop cataracts in both eyes at roughly the same time and may have surgery for both within a short period. Others may only need surgery in one eye for years before the second eye shows significant changes. 

Regular eye examinations remain important after cataract surgery, as they help monitor both the operated eye and the one that has not yet had surgery. If a cataract does develop in the other eye, the process and expectations for surgery will generally be the same.

Long-term expectations after cataract surgery

For most people, cataract surgery provides long-lasting results with no need for additional procedures. However, expectations should always be discussed with a qualified practitioner beforehand to ensure that you understand the risks and possible outcomes.

The artificial lens implanted during surgery does not age or deteriorate, meaning it does not develop clouding the way a natural lens does. Once cataracts are removed from an eye, they do not return. The only exception to this is when PCO develops, but as discussed, this can be treated and does not require the lens to be replaced again.

Apart from PCO, other age-related changes to vision can still occur over time. Presbyopia, which is the gradual loss of near vision that happens with age, is common and often requires reading glasses. Some people also develop glaucoma, a condition that affects the optic nerve, usually due to high pressure in the eye. Macular degeneration, which affects central vision, can also develop with age.

While cataract surgery improves vision by removing the clouded lens, it does not prevent other eye conditions from occurring, which is why regular eye examinations are highly important, even after surgery.

Valley Eye Specialists in Brisbane: Experienced Ophthalmologists

When you meet with one of our experienced ophthalmologists, you’ll have a thorough eye examination and an in-depth discussion about what you can expect from your cataract surgery.

You’ll be able to discuss what you can expect after the procedure, including possible vision changes that you can experience and an explanation of what is and isn’t normal.

To treat cataracts, it’s important to choose a comprehensive ophthalmology practice that can deliver the proper level of care. The ophthalmologists at Valley Eye provide both routine and urgent care for a variety of eye conditions.

Cataract surgery is typically performed as a day surgery at Brisbane Day Surgery in Spring Hill or at North West Private Hospital in Everton Park.

To have a consultation and an eye assessment, please get in touch with our team.

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