Purpose. - Primary congenital glaucoma (PCG) is an extremely rare disease with an incidence of one in 10,000 live births. Increasing axial length due to PCG predisposes to retinal thinning and retinal detachment (RD). The present study aims to determine the long-term surgical outcomes of pediatric RD associated with PCG. Methods. - This was a retrospective study including pediatric patients who underwent vitrectomy with silicone oil injection for RD associated with PCG. Ocular examination reports and surgical findings of patients were analyzed to assess the anatomical and functional outcomes of the surgery. Results. - The study included 20 eyes of 20 children. Mean age was 10.35 +/- 3.73 years, range 5-16 years. The mean axial length was 26.10 +/- 2.19 mm (range, 20.31-28.91 mm). In 11 eyes, the intraocular pressure was < 6 mmHg at the time of RD diagnosis. Visual acuity remained stable in 9 patients (45%), and 7 patients (35%) showed improvement at the final visit. The mean follow-up period was 24.55 +/- 10.01 months, range 12-48 months. During the follow-up period, 6 patients (30%) underwent surgical revision due to recurrent RD. All 14 eyes that underwent silicone oil removal demonstrated maintenance of postoperative globe preservation. In five patients, the silicone oil remained in the eye throughout the follow-up period without the need for enucleation. One patient developed phthisis bulbi. Conclusion. - Ocular comorbidities play a significant role in limiting final visual outcomes. Despite the poor visual prognosis of surgery, globe preservation can be achieved in such cases. Globe preservation has an important impact on patients' quality of life and psychological and social functioning. Moreover, ambulatory vision can be preserved in most eyes. (c) 2025 Elsevier Masson SAS. All rights are reserved, including those for text and data mining, AI training, and similar technologies.