Polydimethyl Siloxane as an Internal Tamponade for Vitreoretinal Surgery

Area of Science:

• Ophthalmology
• Retinal Surgery
• Biomaterials

Background:

• Internal tamponade agents are crucial in vitreoretinal surgery for managing complex retinal detachments.
• Silicone oil is a common tamponade, but complications like emulsification can occur, especially with long-term use.

Purpose of the Study:

• To evaluate the efficacy and safety of polydimethyl siloxane (Siluron Xtra®) as an internal tamponade in vitreoretinal procedures.
• To assess anatomical and visual outcomes, as well as perioperative complications, specifically intraocular pressure.

Main Methods:

• Retrospective analysis of 28 patients undergoing vitreoretinal procedures with Siluron Xtra® tamponade between March 2014 and March 2015.
• Inclusion of all vitreoretinal cases, including retinal detachments, trauma, endophthalmitis, and intraocular foreign bodies.
• Audit of procedures and adverse event screening.

Main Results:

• Anatomical success was achieved in 79% of cases post-injection and 58% at 3 months post-removal.
• Complications included elevated intraocular pressure in five patients, requiring medical management, and one case of glaucoma surgery post-trauma.
• Cataract developed in 3/6 phakic patients, and visible emulsification occurred in only one patient.

Conclusions:

• Polydimethyl siloxane (Siluron Xtra®) demonstrates acceptable anatomical success rates for complex retinal detachments, comparable to other low-viscosity silicone oils.
• It presents a lower rate of emulsification-related complications, a significant advantage for long-term tamponade requirements.
• This agent is a promising alternative for managing challenging retinal detachment cases.