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Purpose: To study the incidence of retinal redetachment and potential associated risk factors in primary rhegmatogenous retinal detachment (RRD) surgery.
Methods: This is a retrospective observational study in which medical data were collected from electronic medical records of all eyes diagnosed with rhegmatogenous retinal detachment who underwent surgery between January 2020 and December 2022 at Thammasat eye center. Overall, new 320 cases undergoing surgical procedure for rhegmatogenous retinal detachment were included in this study.
Results: This study included individuals ranging in age from 7 to 86 years, with a mean age of 57.51 (±13.72) years. The gender distribution of the study sample showed that 213 (66.6%) cases were male and 107 (33.4%) cases were female. Of the total cases, 231 (72.2%) achieved retinal attachment, while as 89 (27.8%) experienced retinal redetachment. Univariate and multivariate logistic regression analysis showed significant differences in the pneumatic retinopexy group, the PVR grade C group and the no face-down position group. The risk of retinal redetachment in the pneumatic retinopexy group was found to be 7.588 times higher than the combined PPV with SBP group (Adj. OR = 7.588, 95% CI 2.264-25.433, p=0.001). Similarly, the risk of retinal redetachment in the PVR grade C group was 8.068 times higher than the PVR grade A group (Adj. OR = 8.068, 95% CI 2.612-24.921, p<0.001). Lastly, the risk of retinal redetachment in the no-face-down position group was found to be 14.809 times higher than the face-down position group (Adj. OR = 14.809, 95% CI 2.992-73.296, p=0.001).
Conclusion: The retinal redetachment rate was 27.8%. And the risk factors for retinal detachment after primary RRD surgery were technique of surgery (pneumatic retinopexy), preoperative retinal detachment status (PVR grade C) and face position after surgery (no face-down position).
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