Transcorneal Vitrectomy In Eyes With Regressed Retinoblastoma
Yicheng K Bao1, Gisella M Sanchez2, Thomas C Lee1,2
1Roski Eye Institute, Keck School of Medicine, University of Southern California, Los Angeles, California; and.
Purpose:
Current treatments for retinoblastoma facilitate globe salvage but can result in vitreoretinal disorders that may require surgery. There is controversy on surgical approaches in eyes with retinoblastoma. Here, we describe a transcorneal vitrectomy approach that avoids the use of chemotherapy or cryotherapy.
Methods:
Retrospective chart review was performed on five consecutive patients with regressed retinoblastoma for >12 months (Group D/ct2b) at Children's Hospital Los Angeles who had vitrectomy between November 2022 and December 2023.
Results:
Five patients underwent eight vitrectomies for various indications including intraocular lens fibrosis, vitreous hemorrhage, cataract, retinal detachment, and silicone oil removal. Mean age at first vitrectomy was 6.2 years (range: 2-9 years); mean time from last retinoblastoma treatment was 50.4 months (range: 20-82 months). Radially oriented corneal incisions were made with the 23-G or 25-G trocar system, and the Versa HD LenZ (Oculus) was used with the RESIGHT (Zeiss) for top-down visualization. Neither chemotherapy nor cryotherapy was used. Wounds were sutured parallel to the limbus with 10-0 polyglactin 910 suture (Vicryl, Ethicon), and a final water rinse was performed to lyse any potential retinoblastoma cells. Surgical objectives were achieved, vision remained stable, and no retinoblastoma spread was noted with a mean follow-up of 7.6 months (range: 3-12 months).
Conclusion:
This vitrectomy technique for eyes with regressed retinoblastoma permits top-down viewing with the Versa HD LenZ. Radial placement of corneal wounds avoids suturing through the uveal tract, and a postsurgical water rinse lyses any retinoblastoma cells. This approach may obviate the need for chemotherapeutics or cryotherapy.
