Vitrectomy

What Is a Vitrectomy?

Vitrectomy involves surgical removal of the vitreous, a gel-like substance contained within the eye. By extracting the vitreous, the surgeon gains direct access to the retina, enabling the performance of various corrective procedures including tear closure, membrane removal, or haemorrhage clearance. Following removal, the vitreous cavity is typically refilled with a specialized gas mixture, silicone oil, or balanced salt solution to preserve intraocular pressure.

This procedure represents a cornerstone of retinal surgical practice and is now predominantly performed via the “pars plana” approach, utilizing minimal incision sizes.

When Is Vitrectomy Performed?

Vitrectomy may be indicated in various serious retinal and vitreous pathologies:

• Retinal detachment (particularly in complex or post-traumatic presentations)
• Vitreous haemorrhage or tractional detachment secondary to advanced diabetic retinopathy
• Macular hole
• Epiretinal membrane (membrane proliferation on the retinal surface)
• Severe intraocular infection (endophthalmitis)
• Implanted or natural lens dislocation, or retained lens fragments
• Intraocular foreign body following ocular trauma

The determination to undertake the procedure depends upon the nature and extent of the condition as well as the general integrity of the eye structure.

How Is a Vitrectomy Performed?

Pars Plana Vitrectomy Technique

Pars plana vitrectomy, the predominant methodology, employs specialised micro-surgical instruments introduced into the eye via small incisions created in the sclera (the white outer layer). The vitreous gel is delicately sectioned and removed using a dedicated aspiration apparatus; subsequent retinal correction—such as tear sealing, membrane stripping, or haemorrhage evacuation—is then undertaken.

Supporting Substances Used During Surgery

Upon completion of surgery, the vitreous space is occupied with one of the following, selected according to clinical requirements:

• Balanced salt solution: Applied in less complex presentations.
• Gas tamponade: Exerts pressure on the retina’s posterior surface during the healing phase, facilitating reattachment; physiological absorption occurs gradually.
• Silicone oil: Furnishes extended structural support in more demanding cases; removal typically necessitates a subsequent surgical intervention.

What Is the Recovery Process Like After Vitrectomy?

• Where gas or silicone oil has been introduced, adherence to specific positional requirements designated by the physician (frequently prone positioning) may be necessary for a defined interval
• Commercial air travel should be avoided while intraocular gas remains present; clarification with the physician is essential
• Progressive changes in visual acuity may manifest during initial weeks and may persist until gas or oil dispersal or extraction is complete
• Consistent application of prescribed topical medications facilitates tissue healing
• Scheduled review appointments should be maintained as determined by the treating physician

What Are the Risks and Complications of Vitrectomy?

Vitrectomy serves as an essential intervention for serious retinal pathologies; however, as with all surgical procedures, certain potential adverse effects warrant consideration:

• Hastened lens opacification (prevalent, particularly when gas or silicone oil is employed)
• Return of retinal detachment or emergence of additional retinal breaks
• Transient or sustained elevation of intraocular pressure
• Infection (endophthalmitis) — uncommon yet potentially serious
• Vision obscuration related to silicone oil presence, potentially lasting until removal is performed

Should sudden visual deterioration, escalating discomfort, or ocular redness develop in the postoperative period, prompt medical consultation is warranted.

What Should Be Considered in Daily Life After Vitrectomy?

• The head positioning advised by the physician should be observed throughout the specified timeframe
• Air travel must be deferred while gas bubble presence persists within the eye
• Strenuous activities and forward flexion may require temporary restriction during early recovery
• Water contact with the eye should be minimized and ocular manipulation avoided
• Adherence to the prescribed instillation schedule and duration of topical medications remains important
• Attending scheduled follow-up assessments permits appropriate monitoring of the healing trajectory

Consultation with a retinal specialist through comprehensive ocular examination is advised for thorough information and individualised assessment pertaining to vitrectomy.