Pars Plana Vitrectomy Surgery | Pristyn Care

Risk Factors

Risk factors associated with pars plana vitrectomy outcomes:

• Advanced diabetic retinopathy with fibrovascular proliferation increasing surgical difficulty
• Long-standing retinal detachment with proliferative vitreoretinopathy reducing success rate
• Cataract formation, which commonly progresses after vitrectomy in phakic patients
• Prior eye surgery or trauma affecting intraocular anatomy
• Systemic conditions such as diabetes or hypertension affecting retinal healing

Candidacy

PPV is indicated for patients with vitreoretinal conditions that threaten vision and cannot be treated by laser or injection alone. Timing is critical for conditions like retinal detachment, where prompt surgery within 24 to 72 hours of macula involvement dramatically improves visual outcomes. Non-urgent conditions such as vitreous floaters or macular pucker may be monitored before surgical intervention is recommended.

Diagnosis

Diagnostic evaluation before pars plana vitrectomy includes:

• Dilated fundus examination to assess retinal anatomy and pathology
• Optical coherence tomography (OCT) for macular and retinal layer imaging
• Ultrasound B-scan when fundus view is obscured by vitreous hemorrhage
• Fluorescein angiography to assess retinal vascularity and perfusion
• Intraocular pressure measurement and anterior segment evaluation

Treatment Options

PPV is indicated when less invasive treatments are insufficient. For retinal detachment, alternatives include scleral buckling or pneumatic retinopexy for selected cases. Vitreous hemorrhage may be observed for spontaneous clearance before surgery is indicated. Macular conditions such as epiretinal membrane may be monitored if vision is minimally affected before vitrectomy is recommended.

The PPV Surgical Procedure

The pars plana vitrectomy procedure at Pristyn Care involves these steps:

• Retrobulbar or peribulbar anesthesia administered with IV sedation for patient comfort
• Three small ports (infusion, light, and cutter) inserted through the pars plana region
• Vitreous gel removed using the vitreous cutter instrument under microscopic visualization
• Retinal pathology addressed – detachment repaired, membrane peeled, or hemorrhage removed
• Internal limiting membrane (ILM) peeled for macular conditions such as macular holes
• Tamponade agent (gas bubble or silicone oil) placed to support retinal reattachment
• Small port wounds sealed – sutureless with smaller gauge systems
• Eye patch and shield applied after the procedure for initial protection

Recovery After Surgery

Recovery after pars plana vitrectomy includes:

• Maintaining a specific head posture (face-down for macular hole repair) for 1 to 2 weeks
• Using prescribed antibiotic and anti-inflammatory eye drops for 4 to 6 weeks
• Avoiding air travel if an intraocular gas bubble has been placed until gas resolves
• Vision may be blurred initially due to the gas or oil tamponade in the eye
• Most patients experience gradual visual improvement over 4 to 8 weeks after surgery
• Follow-up OCT scans to monitor retinal recovery and surgical outcomes

Risks and Complications of PPV Surgery

Potential complications of pars plana vitrectomy include:

• Cataract formation – a very common post-vitrectomy change in phakic patients
• Retinal re-detachment requiring additional surgical intervention
• Elevated intraocular pressure from gas or oil tamponade
• Endophthalmitis – rare but serious infection requiring urgent treatment
• Vitreous hemorrhage from inadequate intraoperative hemostasis
• Macular pucker formation as a post-operative fibrous membrane
• Hypotony (low eye pressure) from wound leakage or inadequate fluid balance
• Permanent vision loss from pre-existing retinal damage despite successful surgery