What Silicone Oil Does
Silicone oil is a remarkable tool in retina surgery. When a patient has a complex retinal detachment, the retina surgeon may inject silicone oil into the eye to tamponade the retina - essentially holding it flat against the back wall of the eye while it heals. For many patients, silicone oil is the difference between saving their vision and losing it.
But silicone oil was never meant to stay in the eye permanently. Over time, it can cause several complications:
- Cataract formation: Contact between silicone oil and the natural lens accelerates cataract development. This is the most common complication and the most frequent reason post-oil patients come to see me.
- Emulsification: Over months or years, the oil can break down into tiny droplets that disperse throughout the eye. These emulsified oil droplets can migrate into the anterior chamber, coat the lens implant (if surgery has already been done), clog the drainage system, and cause chronic inflammation.
- Glaucoma: Silicone oil can elevate intraocular pressure, either by physically blocking the drainage angle or through inflammatory mechanisms. This can damage the optic nerve over time.
- Corneal damage: In eyes where the oil contacts the corneal endothelium (the inner surface of the cornea), there can be progressive endothelial cell loss, leading to corneal edema and vision loss.
The Surgical Approach
Managing retained silicone oil often requires a coordinated approach between anterior segment surgery (what I do) and posterior segment surgery (what a retina specialist does). Depending on the situation, the plan may involve:
- Silicone oil removal: This is a vitreoretinal procedure. It may be done alone or combined with cataract surgery in a single session, depending on the surgical team and the patient's needs.
- Cataract surgery with oil in place: In some cases, the retina surgeon determines that the oil should remain (either the retina is not stable enough for removal, or the patient declines further posterior surgery). Cataract surgery can still be performed with oil present, but it requires modifications to technique and IOL calculations.
- Management of emulsified oil: If the oil has emulsified, I may need to remove oil droplets from the anterior chamber and clean the angle to manage pressure.
- Secondary lens implantation: If the patient is aphakic (has no lens implant) after their retina surgery and oil removal, I can place a secondary lens using techniques like the Yamane flanged intrascleral fixation.
My Retina Training Advantage
Because I am fellowship-trained in both cataract surgery and retina, I understand what the silicone oil is doing in the eye, why it was placed, and what the implications are for any anterior segment surgery. I can read the retina, assess its stability, and communicate effectively with the retina surgeon about timing and coordination. This is not a case where a cataract surgeon who does not understand the posterior segment can safely operate without that perspective.
If you have silicone oil in your eye and are dealing with vision problems, elevated pressure, or cataracts, I can evaluate the situation comprehensively and work with your retina specialist to create a coordinated plan.