Understanding Vitrectomy Surgery
A vitrectomy is a surgical procedure that removes the vitreous gel from the inside of your eye. The vitreous is a clear, jelly-like substance that fills the middle of your eye and helps it maintain its shape. When serious problems develop in or around the retina, the thin layer of tissue at the back of the eye that senses light and sends images to your brain, your eye surgeon may need to remove the vitreous to access and repair the retina directly.
During the procedure, your surgeon uses very small instruments inserted through tiny openings in the white part of the eye. Once the vitreous gel is removed, the surgeon can treat a range of retinal conditions. A special fluid, gas bubble, or silicone oil is placed in the eye afterward to help the retina heal in its proper position. Over time, your eye naturally replaces the substitute with its own fluid.
The retina is essential for clear vision. When conditions such as retinal detachment, bleeding inside the eye, or scar tissue on the retina develop, your sight can decline quickly if left untreated. Vitrectomy allows your surgeon to work directly on the delicate retinal tissue, removing blood, scar tissue, or other obstructions and repairing damage that could otherwise lead to significant or total vision loss in the affected eye.
For many patients, vitrectomy is a sight-preserving procedure. While results vary based on each person's condition and how long the problem has been present, the goal is to stabilize or improve your vision and prevent further damage to the retina.
Vitrectomy is used to address several serious retinal conditions. These include retinal detachment, which occurs when the retina pulls away from its normal position. It is also performed for vitreous hemorrhage, a condition where blood leaks into the vitreous gel and blocks light from reaching the retina. Macular holes, which are small breaks in the macula (the central part of the retina responsible for sharp, detailed vision), are another common reason for this surgery.
Additional conditions include epiretinal membranes, which are thin sheets of scar tissue that form on the surface of the retina and cause distorted vision. Vitrectomy also plays an important role in managing complications of diabetic eye disease. Diabetic retinopathy affects 7.7 million Americans and is the leading cause of blindness among working-age adults (National Eye Institute, 2023). When diabetes damages the blood vessels in the retina, vitrectomy may be needed to clear bleeding or remove scar tissue that threatens vision.
Who Is a Good Candidate
Retinal detachment is one of the most urgent reasons for vitrectomy. When the retina separates from the layer of blood vessels that provides it with oxygen and nutrients, vision can be lost rapidly. Patients who experience sudden flashes of light, a large number of new floaters, or a shadow or curtain moving across their field of vision should seek immediate evaluation. Vitrectomy can be used to reattach the retina and help preserve remaining vision.
People living with diabetes who develop advanced diabetic retinopathy may be candidates for vitrectomy. This is especially true when abnormal blood vessels in the eye bleed into the vitreous, causing sudden vision loss or persistent clouding of sight. Vitrectomy may also be recommended when scar tissue from diabetic eye disease pulls on the retina and threatens detachment. Your care team at Washington Eye Institute will evaluate the severity of your condition and determine whether surgery is the best course of action.
Macular holes and epiretinal membranes can cause blurred or distorted central vision, making it difficult to read, drive, or recognize faces. When these conditions progress to a point where they significantly affect daily life, vitrectomy may be recommended. The surgeon can peel away scar tissue or close a macular hole, giving the macula a chance to heal and function more effectively.
When blood fills the vitreous cavity, it blocks light from reaching the retina and can cause sudden, severe vision loss. In some cases, the blood may clear on its own over weeks or months. However, when bleeding is heavy, recurrent, or does not resolve with observation, vitrectomy offers a way to remove the blood and restore a clear visual pathway. Your surgeon will also address the underlying cause of the bleeding during the procedure to reduce the risk of it happening again.
Not every patient with a retinal condition needs surgery. Some conditions can be managed with observation, laser treatment, or injections of medication into the eye. Your care team will carefully weigh the potential benefits and risks based on your specific diagnosis, the health of your eye, and your overall medical history. In some cases, other health conditions may make surgery more complex, and your care team will discuss these considerations with you in detail.
How Vitrectomy Works
Your journey begins with a thorough examination at one of Washington Eye Institute's locations in Greenbelt, Rockville, or Cumberland. Your care team will perform detailed imaging of your retina, measure your eye, and review your medical history. You will receive specific instructions about which medications to take or pause before surgery, and whether you need to fast the night before.
On the day of surgery, you will arrive at the surgical facility and be prepared for the procedure. Anesthesia is typically administered to keep you comfortable. Most vitrectomies are performed under local anesthesia with sedation, meaning your eye will be numbed and you will feel relaxed but remain awake. In some cases, general anesthesia may be used. Your care team will explain which approach is best for your situation.
The surgeon begins by making three very small incisions, each less than a millimeter in size, in the white part of the eye called the sclera. Through these openings, the surgeon inserts a light source to illuminate the inside of the eye, an infusion line to maintain the eye's shape with fluid, and a cutting instrument to carefully remove the vitreous gel.
Once the vitreous is removed, the surgeon can directly visualize and treat the retina. Depending on the condition being addressed, the surgeon may peel scar tissue from the retinal surface, use a laser to seal retinal tears, remove blood or debris, or reattach a detached retina. The procedure typically takes between one and three hours, depending on the complexity of the condition being treated.
After the retinal repair is complete, the surgeon fills the eye with a tamponade agent, a substance that holds the retina in place while it heals. This may be a gas bubble, which gradually absorbs on its own over several weeks, or silicone oil, which may need to be removed in a later procedure. The tiny incisions in the sclera are often self-sealing, meaning stitches may not be required.
The choice of tamponade depends on the type and severity of the retinal condition. Your surgeon will explain which option is most appropriate and what it means for your recovery, including any positioning requirements you may need to follow after surgery.
Modern vitrectomy uses very small surgical instruments, often referred to as small-gauge systems. These smaller instruments allow the surgeon to work through tinier incisions, which can promote faster healing and greater comfort after surgery. The use of advanced visualization systems also helps the surgeon see the retina in fine detail during the procedure, supporting precise and careful treatment of delicate retinal tissue.
Types and Options Available
The most common form of vitrectomy is called pars plana vitrectomy. The name refers to the area of the eye, the pars plana, where the small incisions are made. This region is located behind the iris and in front of the retina, providing a safe entry point for surgical instruments. Pars plana vitrectomy is used for the vast majority of vitreoretinal conditions, including retinal detachment, vitreous hemorrhage, macular holes, and epiretinal membranes.
In some situations, your surgeon may combine vitrectomy with another procedure to address multiple issues in the same surgery. For example, if you have a cataract along with a retinal condition, your surgeon may perform cataract removal and vitrectomy during the same session. This can reduce the number of surgeries you need and shorten your overall recovery timeline.
Combined procedures are carefully planned based on the specific needs of your eye. Your care team will discuss whether this approach is appropriate for your situation and what to expect from the combined surgery.
When a gas bubble is used to support the retina after vitrectomy, it works by pressing gently against the retina to hold it in place while healing occurs. The gas bubble is gradually absorbed by the body over a period of two to eight weeks, depending on the type of gas used. During this time, you may need to maintain a specific head position, such as keeping your head face down, to ensure the bubble presses against the correct area of the retina.
An important consideration with a gas bubble is that you cannot travel by airplane or go to high altitudes until the bubble has fully absorbed. Changes in air pressure can cause the gas to expand, which could raise the pressure inside your eye to dangerous levels. Your care team will let you know when it is safe to fly.
Silicone oil is another option for supporting the retina after surgery. Unlike a gas bubble, silicone oil does not absorb on its own and typically requires a second, smaller procedure to remove it once the retina has healed. Silicone oil may be preferred in complex retinal detachment cases, for patients who need to travel by air soon after surgery, or in cases where a longer period of retinal support is needed.
Your surgeon will weigh the benefits and considerations of each tamponade option when recommending the best approach for your particular condition.
In cases of epiretinal membrane or macular pucker, the surgeon uses extremely fine instruments to gently peel the thin layer of scar tissue from the surface of the retina. This delicate step is performed under high magnification and requires a skilled and steady hand. The goal of membrane peeling is to allow the retina to relax back into its normal, smooth shape, which can reduce the distortion and blurriness these membranes cause.
What to Expect
After your vitrectomy, your eye will be covered with a protective shield or patch. It is normal to experience some discomfort, mild aching, or a scratchy feeling in the eye. Your care team will provide eye drops to prevent infection and reduce inflammation, along with clear instructions on how and when to use them. Most patients go home the same day as surgery.
If a gas bubble was placed in your eye, you may notice a dark, wobbling shadow in your lower field of vision. This is normal and will gradually shrink as the bubble absorbs. Your surgeon may instruct you to maintain a specific head position during the first several days after surgery. Following these positioning instructions carefully is very important for achieving the best possible outcome.
During the first week, your vision in the treated eye will likely be blurry. If a gas bubble is present, you may see very little through that eye until the bubble begins to shrink. This is expected and temporary. You will have a follow-up appointment within the first few days so your care team can check the pressure in your eye, assess the retina, and make sure healing is progressing well.
During this period, you should avoid strenuous activity, heavy lifting, and bending at the waist. You should also avoid getting water in your eye while showering or bathing. Your care team will provide a detailed list of activities to avoid and let you know when you can gradually resume normal routines.
Over the following weeks, your eye will continue to heal. If a gas bubble was used, it will slowly shrink and you will notice your vision improving as the bubble gets smaller and more of your visual field clears. Once the gas has fully absorbed, it is replaced by the eye's own natural fluid. If silicone oil was used, your vision may remain somewhat cloudy until the oil is removed in a later procedure.
You will have several follow-up visits during this period to monitor your healing. Your care team will gradually adjust your activity restrictions and let you know when it is safe to resume driving, exercise, and other daily activities. It is important to attend all scheduled follow-up appointments, even if your eye feels fine.
Full visual recovery after vitrectomy can take several months. The final level of vision you achieve depends on many factors, including the condition that required surgery, how long the problem was present before treatment, and the health of the retina itself. Some patients experience significant improvement in vision, while others may find that surgery helped prevent further vision loss rather than fully restoring sight.
It is also common for a cataract to develop or progress more quickly in an eye that has had vitrectomy. If this happens, cataract surgery can be performed at a later time to address the clouded lens. Your care team at Washington Eye Institute will continue to monitor your eye health over the long term and recommend any additional treatment as needed.
As with any surgical procedure, vitrectomy carries some risks. These include infection, bleeding inside the eye, increased eye pressure, and cataract development. Retinal detachment can sometimes occur or recur after surgery, which may require additional procedures. In rare cases, vision may not improve or could worsen despite surgery.
Your care team will discuss these risks with you in detail before you decide to proceed. It is important to weigh the potential benefits of surgery against these risks in the context of your specific condition. Many patients find that the risk of not treating a serious retinal condition outweighs the risks associated with surgery.
Your Journey at Washington Eye Institute
Your journey begins with a comprehensive eye examination at any of our locations in Greenbelt, Rockville, or Cumberland. During this visit, your care team will dilate your pupils and use specialized imaging to get a detailed view of your retina and the structures inside your eye. You will have the opportunity to discuss your symptoms, ask questions, and learn about your diagnosis in clear, easy-to-understand terms.
If vitrectomy is recommended, your surgeon will explain the procedure, the type of tamponade that may be used, and what you can expect before, during, and after surgery. You are encouraged to bring a family member or friend to this appointment so they can help you remember the information discussed and support you through the process.
Once you and your care team decide to move forward with vitrectomy, you will receive detailed preoperative instructions. These may include guidelines about eating and drinking before surgery, adjustments to your medications, and arrangements for someone to drive you home after the procedure. You may also need additional testing to make sure your eye and overall health are ready for surgery.
Your care team will make sure you understand the positioning requirements you may need to follow after surgery, especially if a gas bubble will be used. They can help you prepare your home with comfortable pillows, a face-down positioning device if needed, and other items that will make your recovery easier.
On the day of your vitrectomy, you will arrive at the surgical facility and be greeted by your care team. After checking in, you will be prepared for the procedure with eye drops to dilate your pupil, an IV line for sedation, and anesthesia to numb your eye. The surgical team will confirm your identity, the eye being treated, and the planned procedure before beginning.
The surgery itself is performed in a specialized operating room equipped with a surgical microscope and advanced visualization systems. You will be lying comfortably during the procedure and will not feel pain. After surgery, you will rest briefly in a recovery area before being discharged home with your protective eye shield in place.
Recovery from vitrectomy is a gradual process, and your care team at Washington Eye Institute is with you every step of the way. You will have multiple follow-up appointments to track your healing, monitor eye pressure, and assess your vision as it recovers. These visits are essential for catching any complications early and ensuring your retina continues to heal properly.
Your care team is available to answer questions and address concerns at any point during your recovery. Whether you are seen at our Greenbelt, Rockville, or Cumberland location, you will receive consistent, personalized care focused on protecting and preserving your sight for the years ahead.
Frequently Asked Questions
The length of a vitrectomy depends on the complexity of the retinal condition being treated. Most procedures take between one and three hours. Simple cases, such as removing blood from the vitreous cavity, may be on the shorter end, while more complex repairs involving retinal detachment or extensive scar tissue may take longer. Your surgeon will give you an estimate based on your specific situation before the day of surgery.
If a gas bubble is placed in your eye during surgery, you may be asked to maintain a specific head position for several days or even weeks after the procedure. The most common instruction is face-down positioning, which helps the gas bubble press against the area of the retina that needs support. Your care team will explain exactly what position is required and for how long. Not all vitrectomy patients need special positioning, so this will depend on the type of repair performed.
Maintaining the correct position can be challenging, but it plays an important role in achieving a good surgical outcome. Your care team can recommend aids and strategies to help make positioning more comfortable during your recovery.
Most patients can return to light daily activities within a few days to a week after surgery. However, strenuous exercise, heavy lifting, and activities that involve bending or straining should be avoided for several weeks. Your care team will give you specific guidance based on your procedure and how your eye is healing. Driving is typically restricted until your vision has recovered enough for safe operation of a vehicle, which your surgeon will assess at your follow-up visits.
If a gas bubble was placed in your eye, you must not fly in an airplane or travel to high altitudes until the bubble has completely absorbed. The change in air pressure during flight can cause the gas to expand rapidly, leading to a dangerous increase in pressure inside your eye. Depending on the type of gas used, this restriction may last two to eight weeks. If silicone oil was used instead of gas, air travel is generally permitted. Your care team will clearly communicate when it is safe for you to fly.
Vision outcomes after vitrectomy vary widely depending on the underlying condition, how long it was present before surgery, and the health of the retina. In some cases, the primary goal of surgery is to prevent further vision loss rather than to restore vision that has been lost. If your vision does not improve as expected, your care team will evaluate the situation and discuss any additional treatment options that may be available. It is important to have realistic expectations and to discuss your goals with your surgeon before the procedure.
It is common for cataracts to develop or progress more quickly after vitrectomy, particularly in patients who have not already had cataract surgery. This may happen months or even years after the vitrectomy. If a cataract does develop and begins to affect your vision, it can be treated with a separate cataract surgery procedure. Your care team will monitor your lens during your follow-up appointments and recommend cataract surgery if and when it becomes appropriate for you.