Retinal detachment surgery is a highly successful and vision saving intervention, but like all major surgical procedures, it carries a specific set of risks and potential complications. In the UK, vitreoretinal surgeons discuss these risks with patients during the consent process to ensure they can make an informed decision about their care. While most operations proceed without incident, complications can occur either during the surgery itself or in the weeks and months following the procedure. These range from common side effects, such as the development of a cataract, to rarer but more serious issues like infection or the retina failing to reattach. Understanding these risks is essential for managing expectations and for identifying any post-operative symptoms that may require urgent medical attention.
What We’ll Discuss in This Article
- The almost universal risk of cataract development after vitrectomy.
- The clinical significance of high intraocular pressure post-surgery.
- Risks of infection (endophthalmitis) and how they are minimised.
- The possibility of the retina redetecting and the need for further surgery.
- Visual changes including distortion, blur, or double vision.
- Rare complications such as internal bleeding or sympathetic ophthalmia.
- How UK specialists monitor and manage these risks during recovery.
The development of cataracts
The most common long-term complication of a vitrectomy is the development or acceleration of a cataract. A cataract is a clouding of the eye’s natural lens, which leads to blurred or “misty” vision. Almost every patient over the age of fifty who undergoes a vitrectomy will develop a significant cataract in the operated eye, typically within six to eighteen months of the surgery.
This happens because the removal of the vitreous gel and the presence of a gas bubble change the biochemistry and oxygen levels inside the eye, which stresses the lens. In the UK, this is considered an expected outcome rather than a “failure” of the surgery. Most patients will eventually require a second, much simpler operation to remove the cataract and replace it with an artificial lens. According to the RNIB guide on cataract surgery after vitrectomy, this follow up procedure is usually very successful at restoring the clarity of vision that was lost.
Fluctuations in eye pressure
Changes in intraocular pressure (IOP) are common after retinal surgery. In the days following a procedure where a gas bubble was used, the pressure inside the eye can sometimes rise to dangerous levels. This is known as post operative ocular hypertension. If the pressure becomes too high, it can damage the optic nerve, leading to a loss of vision like glaucoma.
Conversely, the pressure can sometimes drop too low (hypotony), particularly if there is a small leak at the incision sites or if the eye is not producing enough fluid. In the UK, clinical protocols from the Royal College of Ophthalmologists mandate that eye pressure is checked at every post-operative visit. Most pressure issues are temporary and can be managed effectively with prescription eye drops, but they must be monitored closely to prevent permanent damage.
The risk of detachment and scar tissue
The most significant risk to the success of the surgery is the retina failing to stay in place. As discussed in previous sections, the growth of scar tissue, known as proliferative vitreoretinopathy (PVR), is the leading cause of detachment. PVR can pull the retina back off the eye wall even after a technically perfect operation.
Approximately ten per cent of patients in the UK will require more than one operation to achieve a permanent reattachment. If the retina does detach again, it is usually treated as a new emergency. While needing a second or third surgery is discouraging, the final reattachment rate remains very high. Surgeon’s use follow up appointments to look for the early “creasing” of the retina that signals the beginning of scar tissue formation, allowing them to intervene before a full detachment occurs.
Infection and internal bleeding
Endophthalmitis, or a severe infection inside the eye, is a very rare but devastating complication of eye surgery, occurring in fewer than one in a thousand cases in the UK. Symptoms include severe pain, worsening redness, and a sudden drop in vision. To prevent this, surgeons use strict sterile techniques in the operating theatre and prescribe antibiotic eye drops for several weeks after the surgery.
Internal bleeding (vitreous haemorrhage) can also occur during or after the procedure. While a small amount of blood is often reabsorbed by the body naturally, a large haemorrhage can block the vision and may require a second vitrectomy to clear the eye. Information from Patient.info regarding retinal detachment complications highlights that while these risks are low, any sudden increase in pain or loss of sight must be reported to the hospital immediately.
Visual distortion and double vision
Even after a successful reattachment, some patients may experience persistent visual disturbances. “Metamorphopsia,” or distorted vision where straight lines appear wavy, is common if the central macula was involved in the detachment. This occurs because the light sensitive cells may not settle back into their original, perfectly flat orientation.
Some patients also experience double vision (diplopia). This can happen if the eye muscles were disturbed during a scleral buckle procedure or if the two eyes are no longer working perfectly together due to the difference in visual clarity. While many of these symptoms improve over several months as the brain and eye adapt, some mild distortion may be permanent. In the UK, specialists work with orthoptists to help manage these visual changes during the rehabilitation phase.
| Complication | Estimated Frequency | Typical Management |
| Cataract | High (in vitrectomy) | Subsequent cataract surgery |
| High Pressure | Common (temporary) | Medicated eye drops |
| Redetachment | 10 to 15 per cent | Further retinal surgery |
| Infection | Very Rare (<0.1%) | Urgent antibiotics / Surgery |
| Distortion | Common if macula off | Time and neural adaptation |
Conclusion
Retinal detachment surgery is a highly effective, sight-saving procedure, but it requires careful monitoring and realistic expectations regarding potential post-operative challenges. From the anticipated development of cataracts to rare risks like infection or redetachment, understanding these complications allows patients to recognize warning signs early and seek prompt medical care. Working closely with your ophthalmic team and attending all scheduled follow-up appointments are the best ways to ensure a safe recovery and preserve your long-term vision.
Will I definitely get a cataract after my vitrectomy?
If you are over fifty and still have your natural lens, it is almost certain that a cataract will develop or worsen within a year or two.
Is eye pain normal after surgery?
Some grittiness and aching are normal, but severe, throbbing pain can be a sign of high pressure or infection and needs immediate review.
Can surgery cause a detachment in my other eye?
No, surgery on one eye does not cause the other to detach, although the underlying risks for detachment often exist in both eyes.
What should I do if my vision suddenly gets worse?
You should contact your hospital’s emergency eye line immediately, as this could be a sign of a detachment, pressure spike, or infection.
How long does it take for distortion to go away?
Distortion can take six to twelve months to improve, and in some cases, a small amount of “waviness” may remain permanently.
Are there risks from the anaesthetic?
Local anaesthetic is very safe, but there is always a tiny risk with any sedation or general anaesthetic, which will be discussed by the anaesthetist.
Can the silicone oil stay in my eye forever?
Usually, no. If left too long, silicone oil can cause high pressure or damage the cornea, so it is typically removed after three to six months.
Authority Snapshot
This article provides educational information on preventing retinal detachment for high risk individuals in the UK. The content is developed and reviewed by the Medical Content Team and Dr. Stefan, ensuring it meets UK clinical standards for preventative ophthalmic care. All guidance is strictly based on College of Optometrists clinical management guidelines and NHS health information.
