Scleral buckle surgery is a time tested and highly reliable surgical technique used to repair retinal detachment by addressing the condition from the outside of the eye. While the modern vitrectomy has become the most common procedure for adults, the scleral buckle remains a critical tool in the UK vitreoretinal surgeon’s arsenal, particularly for specific patient profiles and types of retinal tears. Unlike a vitrectomy, which involves removing the internal gel of the eye, a scleral buckle works by physically indenting the wall of the eye to bring it back into contact with the detached retina. This external approach is often the preferred clinical choice for younger patients, those with simple inferior detachments, or cases where preserving the natural lens of the eye is a high priority. In the UK, the decision to use a scleral buckle is based on a meticulous assessment of the eye’s anatomy and the long-term visual goals for the patient.
What We’ll Discuss in This Article
- The mechanical principles of how a scleral buckle reattaches the retina.
- Why younger patients are the primary candidates for this external procedure.
- The clinical advantages of preserving the natural vitreous gel and lens.
- Using scleral buckles for inferior detachments and specific peripheral tears.
- Comparing the recovery process and long-term outcomes with vitrectomy.
- The role of combined procedures involving both internal and external repairs.
- Post operative expectations and the impact on the eye’s refractive state.
Preserving the lens in younger patients
One of the most compelling reasons a UK surgeon will choose a scleral buckle over a vitrectomy is to preserve the patient’s natural crystalline lens. Vitrectomy surgery, which involves replacing the vitreous gel with gas or oil, almost inevitably leads to the rapid development of a cataract in the operated eye, often within one to two years of the procedure. For an older patient who has already had cataract surgery, this is not a concern. However, for a younger patient in their twenties, thirties, or even forties, preserving their natural focusing ability is a significant clinical priority.
By using a scleral buckle, the surgeon does not need to enter the eye or remove the vitreous gel. This means the natural biochemistry of the eye remains largely undisturbed, and the risk of developing a premature cataract is significantly reduced. According to the Association of Optometrists guide on retinal detachment treatments, the scleral buckle is often the “gold standard” for phakic patients (those with their natural lens) who have a relatively straightforward detachment caused by a single tear.
Addressing simple and inferior detachments
The location and complexity of the retinal tear play a major role in the selection of a scleral buckle. This technique is particularly effective for “simple” rhegmatogenous retinal detachments, where there is a clear, visible tear in the peripheral retina and no significant scar tissue or internal bleeding. In many cases, these tears are in the inferior (lower) part of the eye.
Inferior detachments are historically more challenging to treat with a vitrectomy and a gas bubble because gas naturally floats upward. To treat a lower tear with gas, the patient would need to maintain an extremely difficult “head down” or “handstand” position for several days. A scleral buckle avoids this issue entirely by providing a permanent physical support at the site of the tear, regardless of its position. This makes it a highly reliable option for tears that are difficult to “tamponade” from the inside. The RNIB information on retinal detachment surgery highlights that for many patients, the buckle offers a more “passive” form of recovery compared to the strict posturing required after a vitrectomy.
The mechanical advantage of the buckle
A scleral buckle works by creating a “permanent indentation” in the wall of the eye. The surgeon stitches a small band or sponge made of medical grade silicone to the sclera (the white of the eye). This band is positioned so that it pushes the eye wall inward, effectively closing the space between the eye wall and the detached retina. This mechanical “buckling” serves two main purposes. First, it brings the retinal pigment epithelium back into contact with the retina so that the natural suction of the eye can begin to work again. Second, it reduces the traction or “pulling” from the vitreous gel that caused the tear in the first place.
Because the buckle is permanent, it provides ongoing support to the retina. In the UK, this is often preferred for patients who have “dialysis” tears linear tears along the edge of the retina often caused by trauma or for those with “lattice degeneration” where the retina is thin in multiple areas. Clinical management protocols from the College of Optometrists regarding retinal detachment suggest that the buckle is an excellent choice for eyes that need long term structural reinforcement rather than just a temporary gas bubble.
Avoiding the risks of internal surgery
Every time a surgeon enters the eye, there is a small but real risk of infection (endophthalmitis) or a sudden increase in eye pressure. Because a scleral buckle is an external procedure, these “intraocular” risks are significantly minimised. The surgeon does not need to make incisions that go all the way through the eye wall, which maintains the internal pressure and sterile environment of the vitreous cavity more effectively.
Additionally, because there is no gas bubble used in a standard scleral buckle, there are fewer restrictions on the patient’s lifestyle immediately after surgery. Patients do not have the same risk of blindness from flying or travelling to high altitudes that exists with a gas bubble. For patients who live in remote areas or those who cannot comply with the strict positioning and travel restrictions of internal surgery, the scleral buckle offers a safer and more manageable pathway to visual recovery.
Combined buckle and vitrectomy procedures
In some complex cases, a UK surgeon may decide that neither a buckle nor a vitrectomy alone is sufficient. In these scenarios, they may perform a combined procedure. The vitrectomy is used to remove blood and scar tissue from the inside, while the scleral buckle is used to provide permanent support to the peripheral tears from the outside.
This “belt and braces” approach is often used for patients who have already had a failed retinal surgery or those with proliferative vitreoretinopathy (PVR), where scar tissue is actively trying to pull the retina back off. By combining the two techniques, the surgeon can address the traction from both the inside and the outside, providing the highest possible chance of success in an otherwise difficult case. While the surgery takes longer and the recovery is more intensive, the long-term anatomical success rate of combined procedures is very high.
Post operative expectations and refractive changes
While the scleral buckle is highly effective, it does come with some specific post-operative changes that patients should be aware of. Because the buckle physically changes the shape of the eyeball, it often makes the eye slightly longer. This results in a “myopic shift,” meaning the patient may become shorter sighted in the operated eye. Most patients will need a new spectacle prescription several months after the surgery once the eye has fully settled.
There can also be some temporary discomfort as the eye muscles adjust to the presence of the silicone band, and some patients may experience temporary double vision or “ptosis” (a slightly droopy eyelid). However, these side effects are generally considered a small price to pay for the preservation of sight. In the UK, follow up care for scleral buckle patients is thorough, ensuring that the buckle remains in the correct position and that the retina is healing as expected without excessive inflammation.
| Feature | Scleral Buckle (External) | Vitrectomy (Internal) |
| Primary Advantage | Preserves natural lens/vitreous | Clears blood and scar tissue |
| Best For | Younger patients, inferior tears | Older patients, complex cases |
| Cataract Risk | Very Low | Very High |
| Refractive Change | Often increases short sightedness | Usually minimal change |
| Posturing | Usually not required | Often strictly required |
Conclusion
A scleral buckle is used for retinal detachment when the surgeon aims to preserve the patient’s natural lens or when the tears are in the lower part of the eye. It is the primary choice for younger patients due to its low risk of causing premature cataracts and its ability to provide permanent structural support without entering the internal cavity of the eye. While it can change the eye’s prescription, its reliability and safety make it a cornerstone of UK ophthalmic surgery. If you experience severe, sudden, or worsening symptoms, call 999 immediately.
Can the scleral buckle be seen by other people?
No, the silicone band is placed under the conjunctiva and behind the eye muscles, so it is completely hidden from view.
Will the buckle ever need to be removed?
In most cases, the buckle stays in the eye permanently; it is only removed if it becomes infected or causes significant discomfort, which is rare.
How long is the recovery from a scleral buckle?
The initial healing takes about two to four weeks, but it can take several months for the final vision to stabilise and for a new glasses prescription to be issued.
Does a scleral buckle hurt?
The surgery is performed under anaesthesia, so you won’t feel anything; afterwards, the eye may feel “sore” or “tight” for a few days, which can be managed with painkillers.
Why is it better for younger people?
Because it doesn’t cause cataracts, allowing younger people to keep their natural focusing ability for many more years.
Can I still play sports with a scleral buckle?
Yes, once the eye has fully healed, most patients can return to normal activities, though you should always wear eye protection for contact sports.
What happens if the buckle doesn’t work?
If the retina does not reattach, the surgeon may perform a vitrectomy to fix the detachment from the inside, often leaving the buckle in place for extra support.
Authority Snapshot
This article provides educational information on the use of scleral buckle surgery for retinal detachment in the UK. The content is developed and reviewed by the Medical Content Team and Dr. Stefan, ensuring alignment with UK clinical protocols for vitreoretinal care. All information is strictly based on guidance from the Association of Optometrists and the College of Optometrists to ensure accurate public health awareness.
