Can Cataract Surgery Cause Retinal Detachment? What You Need to Know

While cataract surgery is a common and generally safe procedure, it can sometimes lead to complications, especially in people with certain eye conditions or existing retinal problems. One rare but serious issue is retinal detachment. This happens when the retina, a thin layer at the back of the eye, pulls away from its normal position.

Although retinal detachment does not affect most people who undergo private cataract surgery, the risk should not be ignored. Since this condition can lead to permanent vision loss if left untreated, it is important to understand what causes it and which signs to watch for.

While most people recover well after cataract surgery, knowing the risk factors and warning signs of retinal detachment can help them seek care at the right time.

How Are Cataract Surgery and Retinal Detachment Connected?

Cataract surgery does not usually cause retinal detachment, but it can increase the risk in some people. The risk remains low, with studies reporting that fewer than 1% of cataract surgeries lead to this problem.

The retina is a light-sensitive layer at the back of the eye. It sends visual signals to the brain, helping you see shapes, colours, and details. When the retina pulls away from the tissue that supports it, it cannot work as it should. This can lead to vision loss if left untreated.

During and after cataract surgery, changes inside the eye can affect the vitreous. This is the clear, jelly-like substance that fills the space between the lens and the retina. As the vitreous shifts or shrinks, it can pull on the retina and cause a tear. Fluid may then pass through the tear and collect beneath the retina, causing it to detach.

The risk is not the same for everyone. Factors such as age, eye shape, existing retinal problems, and complications during surgery can affect a person’s chances of developing this condition.

5 Risk Factors for Retinal Detachment After Cataract Surgery

Although retinal detachment is uncommon after cataract surgery, certain factors can raise the risk. Knowing about them helps patients and eye surgeons take the right steps before and after the procedure.

Here are five key risk factors for retinal detachment after cataract surgery. 

High Myopia or Severe Nearsightedness

People with high myopia, also known as severe nearsightedness, have a higher risk of retinal detachment. This is because their eyes are often longer than normal, which can stretch and thin the retina.

A thinner retina is more likely to develop weak spots or tears. Cataract surgery can add to this risk, so people with high myopia need a careful eye check before the procedure.

Previous Retinal Tears or Detachment

A history of retinal tears or detachment can increase the risk of further retinal problems. This is also true for people who have had retinal detachment in one eye, as the other eye may share similar risk factors.

Before cataract surgery, patients should tell their eye surgeon about any past retinal issues. This helps the surgeon assess the eye and plan suitable care.

Lattice Degeneration

Lattice degeneration is a condition in which certain areas of the retina become thin and weak. These areas are more likely to develop small tears or breaks.

Many people with lattice degeneration do not have any symptoms. However, the condition can raise the risk of retinal detachment, especially after eye surgery. A retinal exam can help identify these weak areas before cataract surgery.

Younger Age

Younger adults who undergo cataract surgery have a higher risk of retinal detachment than older patients. This is partly because the vitreous gel may still be firmly attached to the retina.

Changes in the vitreous after surgery can cause it to pull on the retina. This may lead to a tear and, in some cases, retinal detachment.

Complications During Surgery

Certain complications during cataract surgery can raise the risk of retinal detachment. One example is a tear in the posterior capsule, which is the thin layer behind the natural lens.

If this layer tears, some of the vitreous gel may move into the front part of the eye. This can place extra pull on the retina and increase the chance of a tear or detachment.

What Are the Signs of Retinal Detachment After Cataract Surgery?

Retinal detachment does not always cause pain. However, it often leads to sudden changes in vision that need urgent medical care.

Some common warning signs include:

• A sudden increase in floaters: These look like small dots, dark spots, or threads moving across your field of vision.
• Flashes of light: You may notice brief flashes, even when your eyes are closed.
• A dark shadow or curtain: A dark area may appear at the side of your vision and spread towards the centre.
• Blurred vision: Your sight may become unclear or less sharp.
• Loss of side vision: You may find it harder to see objects around you.

These signs should never be ignored, especially after cataract surgery. If you notice any of them, seek urgent eye care. Early treatment helps protect your vision and lowers the risk of lasting damage.

How Can You Lower the Risk of Retinal Detachment After Cataract Surgery?

Although retinal detachment cannot always be prevented, certain steps can help lower the risk after cataract surgery. Regular eye checks and proper care during recovery can help spot problems early.

Here are some steps that can help:

• Attend Pre-Surgery Eye Checks: A full eye exam helps your eye surgeon check the health of your retina before cataract surgery. This may help identify weak areas, retinal tears, or other problems that could raise the risk of detachment. If any issues are found, your surgeon can decide whether they need treatment or closer checks before surgery.
• Share Your Medical History: Tell your eye surgeon about any past retinal tears, retinal detachment, eye injuries, or severe nearsightedness. These details can help the surgeon understand your risk and plan the right care. If you have had retinal treatment in the past, share that information as well.
• Follow Post-Surgery Care Instructions: After cataract surgery, follow the care steps given by your surgeon. Use your prescribed eye drops as directed and avoid rubbing or pressing on the eye while it heals. Your surgeon may also advise you on when to return to daily tasks and which activities to avoid during recovery.
• Attend Follow-Up Visits: Follow-up visits help your eye specialist check how your eye is healing and whether your vision is improving as expected. These visits also allow the surgeon to look for signs of complications. Keep all planned appointments, even if your eye feels comfortable and your vision seems clear.
• Watch for Sudden Vision Changes: Pay attention to new or unusual changes in your vision after surgery. A sudden increase in floaters, flashes of light, or a dark shadow across your vision may be signs of a retinal tear or detachment. Seek urgent eye care if these symptoms occur. Do not wait for your next planned appointment, as early treatment can help protect your sight.

Taking these steps helps your eye care team assess your risk and respond to any problems early. While they cannot prevent every case of retinal detachment, regular checks and quick care for new symptoms can help protect your vision.

Conclusion

Although cataract surgery is a safe and common procedure, it can sometimes raise the risk of retinal detachment. People with high myopia, past retinal problems, or weak areas in the retina may face a higher risk.

Knowing the warning signs and attending regular eye checks can help detect retinal problems early. By seeking prompt care for sudden flashes, new floaters, or dark shadows in your vision, you can help protect your sight and lower the risk of lasting damage.

Are you concerned about retinal detachment or your eye health after cataract surgery? The SEE Clinic offers specialist eye care to help assess the risk of retinal detachment, identify retinal problems, and guide patients towards the right care.

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