Pars Plana Vitrectomy: Procedure and Recovery Guide

Retinal detachment occurs when the retina separates from the underlying tissue that nourishes it. Without prompt treatment, the detached retina can lose function permanently. Without treatment, retinal detachment almost always leads to permanent vision loss in the affected eye (American Academy of Ophthalmology). Vitrectomy allows the surgeon to remove any vitreous traction pulling on the retina, flatten the detached tissue, and place a gas bubble or silicone oil to hold it in position while it heals. In some cases, vitrectomy is combined with a scleral buckle for added support. Learn more about how quickly retinal detachment can affect vision.

Bleeding into the vitreous cavity, often caused by diabetic retinopathy or a retinal tear, can cloud vision severely. When the blood does not clear on its own within a reasonable timeframe, vitrectomy removes the blood-filled vitreous and restores a clear visual pathway. This also gives the surgeon an opportunity to treat the underlying source of bleeding with laser photocoagulation during the same procedure. For more details, see our page on vitreous hemorrhage.

A macular hole is a small break in the macula, the central part of the retina responsible for sharp, detailed vision. An epiretinal membrane is a thin layer of scar tissue that forms on the macular surface and causes distortion. Vitrectomy is the standard treatment for both conditions. The surgeon carefully peels away the membrane or internal limiting membrane to relieve traction and then places a gas bubble to support closure of the hole. You can read more about macular hole causes, symptoms, and treatment.

Advanced diabetic eye disease can cause abnormal blood vessels and scar tissue to grow on the retina, leading to bleeding and tractional retinal detachment. Vitrectomy removes the scar tissue and abnormal vessels, and allows the surgeon to apply laser treatment directly to the retina. For patients already receiving intravitreal injections, vitrectomy may become necessary if the disease progresses despite medical therapy. Learn more about proliferative diabetic retinopathy.

Vitrectomy may also be performed for retained lens fragments after cataract surgery, severe eye infections (endophthalmitis), intraocular foreign bodies, and certain complications of eye trauma. Each case is evaluated individually to determine whether vitrectomy offers the best path to preserving vision.

Most patients can return to light daily activities within one to two weeks, though complete visual recovery often takes several weeks to a few months. The timeline depends on the condition that was treated and whether a gas bubble or silicone oil was placed in the eye. You will have several follow-up appointments in the weeks after surgery so our retina specialists can monitor your healing and adjust your care plan as needed.

You should avoid heavy lifting, strenuous exercise, and bending at the waist for at least two to four weeks after surgery. Swimming and submerging your head in water should be avoided until your surgeon confirms that the incisions have fully healed. Reading, watching television, and light walking are generally permitted within the first few days, though your vision may be blurry during the initial recovery period.

Face-down positioning is required when a gas bubble has been placed to repair a macular hole or support a retinal reattachment. The position keeps the bubble pressing against the treated area of the retina, which is essential for proper healing. Depending on your condition, you may need to maintain this position for several days to two weeks. Special equipment such as face-down chairs and sleeping cushions can make the process more manageable, and your surgical team will provide detailed instructions and scheduling guidance.

As with any surgery, vitrectomy carries some risks. The most common include cataract progression (particularly in patients who have not yet had cataract surgery), elevated eye pressure, bleeding inside the eye, infection, and retinal re-detachment. Serious complications such as endophthalmitis (a severe intraocular infection) are rare. Our retina specialists take every precaution to minimize risk, including the use of small-gauge instruments and sterile surgical protocols. The benefits of treating the underlying retinal condition typically outweigh the surgical risks.

You must not fly or travel to high altitudes while a gas bubble remains in your eye. Changes in atmospheric pressure cause the gas to expand, which can raise eye pressure to dangerous levels and result in severe pain or vision loss. Gas bubbles typically take two to eight weeks to fully absorb depending on the type used. Your surgeon will let you know when the bubble has dissolved enough for air travel to be safe. Be sure to inform any other medical providers about your gas bubble, as certain anesthetic gases used during other procedures are also incompatible.

Visual outcomes depend on the condition that prompted surgery, how long the problem was present before treatment, and the overall health of the retina. Many patients experience meaningful improvement in clarity, reduced distortion, or restored peripheral vision. If a gas bubble was used, vision will be very blurry until the bubble absorbs, then gradually sharpens over the following weeks. Your surgeon will discuss realistic expectations based on your individual diagnosis so you know what to look for during recovery.