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Reverse 4-Throw Pupilloplasty for Endothelial Keratoplasty
Rhea Narang1,2, Amar Agarwal3
1SMT. NHL Medical College, Ahmedabad, India.
Cornea
|January 2, 2024
Summary
The reverse 4-throw (RFT) pupilloplasty is a feasible technique for endothelial keratoplasty. This method effectively apposes iris tissue without leaving sutures in the anterior chamber, ensuring successful outcomes.
Area of Science:
- Ophthalmology
- Surgical Techniques
Background:
- Endothelial keratoplasty requires precise surgical techniques.
- Pupilloplasty is often necessary during these procedures.
Purpose of the Study:
- To evaluate the feasibility and applicability of the reverse 4-throw (RFT) pupilloplasty technique.
- To assess RFT pupilloplasty in the context of endothelial keratoplasty.
Main Methods:
- The reverse 4-throw (RFT) technique involves using polypropylene and 26-gauge needles to appose iris tissue.
- Sutures are manipulated to create a knot on the posterior surface of the iris.
Main Results:
- The RFT pupilloplasty was performed on 11 eyes undergoing endothelial keratoplasty.
- Anterior segment OCT confirmed no sutures were present in the anterior chamber.
- No primary graft failure or rejection occurred during follow-up.
Conclusions:
- The reverse 4-throw (RFT) technique is effective for pupilloplasty in endothelial keratoplasty.
- This method avoids anterior chamber suture or knot presence.

