摘要： Purpose: To investigate the clinical features and surgical outcomes of rhegmatogenous retinal detachment (RRD) requiring surgery according to age. Methods: Medical records of patients who underwent surgery for primary RRD between January 2008 and March 2016 were reviewed retrospectively. Patients were classified into two groups according to age at diagnosis: the under-40 group and the over-40 group. The two groups were compared in terms of demographic features, ocular manifestation, operating methods, primary anatomical success rate, and visual outcome. Results: One hundred and forty-four eyes from 144 patients were included. Mean subject age was 48.6 ± 16.9 years old. The under-40 group involved 42 eyes from 42 patients, and the over-40 group included 102 eyes from 102 patients. Symptom duration was shorter in the under-40 group compared to the over-40 group (7.6 ± 10.7 days vs. 14.5 ± 24.4 days; p = 0.029). Proliferative vitreoretinopathy (PVR) occurred more frequently in the under-40 group (40.0% vs. 17.4%, p = 0.007) than in the over-40 group. The anatomical success rate of primary surgery was significantly different between the two groups; 78.6% in the under-40 group and 91.2% in the over-40 group (p = 0.038). Preoperative PVR increased the rate of anatomical failure (40.0% vs. 6.2%, p < 0.001). The visual outcomes were not significantly different between the two groups. Conclusions: RRD is combined with PVR more frequently in young patients than in old patients, which increases the failure rate of primary re-attachment surgery.