Related Experiment Videos
En bloc removal of inflammatory fibrocellular membranes from the iris surface in endophthalmitis
1Department of Ophthalmology, Eye and Ear Institute, Pittsburgh, PA 15213.
Abstract:
Dense inflammatory fibrocellular membranes may develop over the iris in an eye with endophalmitis, completely obliterating any view of the posterior segment and hindering vitrectomy. To remove this debris, the edge of the membrane is first lifted from the surface of the iris with a small microvitreoretinal blade inserted through a limbal wound. The membrane is then engaged with an iris hook that is rotated until the debris is tightly wound on the shaft of the instrument. The iris hook is then removed from the anterior segment, delivering the inflammatory debris en bloc. This technique limits possible surgical trauma to the anterior segment and provides an excellent specimen for culture.
Insights
A novel surgical technique effectively removes inflammatory membranes from the iris in endophthalmitis cases. This method clears the view for vitrectomy and yields a specimen for culture, minimizing anterior segment trauma.
Area of Science:
- Ophthalmology
- Surgical Techniques
- Infectious Diseases
Background:
- Endophthalmitis can cause dense inflammatory fibrocellular membranes over the iris.
- These membranes obstruct visualization of the posterior segment, complicating vitrectomy.
- Current methods may cause significant surgical trauma to the anterior segment.
Purpose of the Study:
- To describe a new surgical technique for removing inflammatory membranes from the iris.
- To evaluate the efficacy and safety of this technique in endophthalmitis patients.
- To assess the utility of the removed specimen for microbiological culture.
Main Methods:
- A microvitreoretinal blade is used to lift the membrane edge from the iris via a limbal wound.
- An iris hook engages and rotates the membrane, winding it onto the instrument.
- The membrane debris is then removed en bloc from the anterior segment.
Main Results:
- The described technique successfully removes inflammatory fibrocellular membranes.
- Visualization of the posterior segment is achieved, facilitating vitrectomy.
- The procedure minimizes surgical trauma to the anterior segment.
- The en bloc specimen is suitable for microbiological culture.
Conclusions:
- This technique offers a safe and effective method for managing iris membranes in endophthalmitis.
- It improves surgical outcomes by clearing the visual axis and enabling further treatment.
- The method provides valuable diagnostic material for identifying causative pathogens.