Proliferative Vitreoretinopathy: Causes, Symptoms, and Treatment
Understanding Proliferative Vitreoretinopathy
This section explains what PVR is, how often it appears, and why it develops.
PVR affects about five to ten percent of retinal detachment cases, which equals roughly 31 to 63 people each year in the Philadelphia–Camden region.
After a detachment, certain retinal cells multiply and form tough membranes. These membranes contract, pull on the retina, and block normal healing, leading to further traction and possible re-detachment.
Vision Loss and Prognosis
PVR can threaten vision, but timely treatment offers hope for useful sight.
Scar tissue can distort or detach the retina, disrupt light-sensing cells, and, if untreated, cause severe and permanent vision loss.
Permanent damage may occur under certain conditions:
- The retina stays detached for an extended period, harming light-sensitive cells.
- Repeated surgeries create additional scarring and distortion.
- Complications such as retinal atrophy, low eye pressure, or dense scarring destroy retinal function.
Many patients keep functional vision when treatment begins quickly and before the macula suffers lasting damage.
Risk Factors
Several medical and surgical factors raise the chance of developing PVR.
A history of PVR or a large, complex, or chronic detachment makes recurrence more likely.
Certain issues during or after surgery increase risk:
- Intraocular bleeding
- Extensive or repeated laser treatment
- Incomplete vitreous removal
- Re-detachment after initial repair
Some ocular conditions promote membrane formation:
- Aphakia (absence of the natural lens)
- Vitreous hemorrhage
- High protein content within the vitreous
- Uveitis or other inflammation
- Ocular trauma
- Multiple or large retinal breaks, especially posterior ones
Disruption of the barrier releases growth factors and cytokines that drive cell migration and scarring.
Long gaps between detachment and surgery expose the retina to prolonged inflammation and raise PVR risk.
Extensive retinal damage from these detachments increases traction and the chance of PVR.
Silicone oil tamponade can, in some cases, promote PVR when left in the eye for an extended time.
Surgical Treatment Options
Surgery aims to remove traction, reattach the retina, and stabilize vision.
Vitrectomy removes the vitreous gel and allows access to scar tissue, which is then peeled away to relieve tension.
- The surgeon often uses a bimanual technique for precision.
- Mature membranes peel off as a sheet, while immature ones may tear easily.
An encircling buckle may be added, or an existing buckle left in place, to reduce peripheral traction after membrane removal.
Good visualization improves safety and outcomes:
- Illuminated pick or chandelier light source brightens the surgical field.
- Perfluorocarbon liquid flattens and stabilizes the retina during membrane dissection.
When traction cannot be fully relieved, a relaxing retinectomy removes scarred retina to allow reattachment.
- Most cuts are made in the inferior retina, sparing central vision.
- Endodiathermy marks the incision to limit bleeding before the scarred tissue is excised.
Recovery and Complications
Both early and late challenges require close follow-up after PVR surgery.
Risks include subretinal bleeding, accidental choroid injury, retained perfluorocarbon liquid, or silicone oil migration, all of which may threaten vision if not addressed quickly.
Possible issues include recurrent detachment, persistent macular swelling, glaucoma, or low eye pressure, which affects up to one-quarter of patients and can be difficult to treat.
Recognizing Symptoms
Knowing the signs of PVR helps patients seek care before damage progresses.
Vision that improves after surgery but suddenly declines again is a key warning sign.
Scar tissue can wrinkle the retina, making straight lines appear wavy or blurry.
Dark spots, strands, or cobwebs may drift across the field of view as membranes form.
Shadows or a curtain-like effect can indicate re-detachment of the retina.
Brief flashes of light, often in peripheral vision, result from traction on the retina.
Scarring can reduce the ability to see in dim light or distinguish similar shades.
When the macula is involved, reading and recognizing fine detail become harder.
Distortion in one eye may cause imbalance or problems judging distance.
Postoperative Care
Close monitoring supports the best possible anatomic and visual outcomes.
During the first weeks after surgery, our retina team checks eye pressure, inflammation, and healing to catch any problem early and keep the retina attached.
Compassionate Care for Your Retina
Our practice is committed to delivering advanced retinal treatment with personal attention. If you face PVR, know that a caring team stands ready to guide you through diagnosis, surgery, and recovery.
I was given an emergency appointment with Dr Rho. He looked in my eyes and saw a hole in my retina. I am so thankful to Dr. Rho and his team for making me feel comfortable and at ease.
H.S
Dr. Rho is the best retina specialist in the world he saved my eye sight very professional
Karen Hawkins
Dr. is caring and very knowledgeable about Retina care. He is never to busy to answer my questions. He and his staff possess wonderful people skills and care. They are all very professional.
Frances Harrison
I always feel very confident in Dr. Soll's Evaluaciones and Recommendations. Dr. Rho also gave also gave me a thorough retina exam
Rose Curley
I had an appointment with the retina specialist on Saturday morning. I'm VERY happy with my care there. Office staff was very friendly and Dr was great. I recommend this office.
Joan Schmidt
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