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[Experience with the artificial iris diaphragm in hypotonic eyes]
G K I Keller1, C Dahlke, R Kuckelkorn
1Augenklinik des Universitätsklinikums der RWTH Aachen. gkikeller@aol.com
Summary
An artificial iris diaphragm can prevent silicone oil-induced keratopathy in aphakic eyes. While effective in retaining silicone oil, complications like hypotony persist, necessitating further improvements.
Area of Science:
- Ophthalmology
- Retinal Surgery
- Ocular Trauma
Context:
- Longstanding silicone oil tamponade can cause keratopathy after iris loss.
- Artificial iris diaphragms offer a solution to prevent this complication.
- Closed artificial iris diaphragms are used in cases of hypotony with poor aqueous humor circulation.
Purpose:
- To evaluate the efficacy and complications of closed artificial iris diaphragm implantation in aphakic eyes after silicone oil surgery.
- To assess the impact of the artificial iris diaphragm on silicone oil retention and ocular health.
Summary:
- A retrospective study reviewed 41 aphakic eyes with implanted closed artificial iris diaphragms post-silicone oil surgery.
- Silicone oil was retained behind the diaphragm in 61% of cases, but 34% experienced prolapse into the anterior chamber.
- Complications included corneal deterioration (27%) and persistent hypotony (71%), though visual acuity remained stable in 95%.
Impact:
- The artificial iris diaphragm is a significant advancement for salvaging severely traumatized eyes.
- It successfully avoided silicone oil contact with the endothelium in 61% of patients.
- Persistent hypotony remains a challenge, highlighting the need for improved anterior-posterior separation techniques.