Validation of the Postnatal Growth and Retinopathy of Prematurity (G-ROP) criteria in a Slovenian cohortZupan, Matej (Avtor) Binenbaum, Gil (Avtor) Tekavčič Pompe, Manca (Avtor) prematuritypostnatal growthretinopathySloveniacohort studyPurpose: To validate the Postnatal Growth and ROP (G-ROP) study criteria for retinopathy of prematurity (ROP) screening in a Slovenian cohort. Methods: We conducted a retrospective cohort study of preterm infants screened in 2021 at the University Medical Centre Ljubljana, Slovenia. The G-ROP criteria were systematically applied. Primary outcomes were sensitivity for ROP requiring treatment, sensitivity for any ROP, and reduction in the number of infants screened. Results: Of 102 infants screened, 27 (26.4%) developed ROP. Eleven infants (10.7%) had type 1 ROP, of whom 2 (1.9%) had aggressive ROP; 5 infants (4.9%) had type 2 ROP, and 11 (10.7%) had milder ROP. Using the original or simplified G-ROP criteria, all infants who developed type 1 ROP (sensitivity, 100% [95% CI, 74%-100%]), and all infants who developed ROP (sensitivity, 100% [95% CI, 88%-100%]) were correctly identified. Application of the original G-ROP criteria would have reduced the number of infants screened by 29.4% (30 of 102). Conclusions: In our cohort, both the original and simplified G-ROP criteria showed 100% sensitivity for predicting ROP type 1 while reducing the number of unnecessary screenings. These results confirm the reliability of the G-ROP criteria in the Slovenian context and suggest that their use improves screening efficiency.20252026-04-14 15:06:16Neznano28960sl