Risk of Retinal Redetachment After Cataract Surgery Following Retinal Detachment Repair in Myopic and Highly Myopic Eyes

<b>Purpose:</b> To describe how risk factors such as repair of rhegmatogenous retinal detachment (RRD), cataract extraction, and myopia interrelate to influence the risk of retinal redetachment. <b>Methods:</b> This retrospective cohort study included patients with phakic RRD who had subsequent cataract extraction. The incidence and risk of redetachment were compared using Cox regression and χ² analyses. Stratified analyses were performed based on time after cataract extraction, age, myopia status, and retinal repair type. <b>Results:</b> Of 1222 patients identified, no significant association was found between myopia and the incidence of redetachment, although the proportion of redetachments increased with the degree of myopia (nonmyopes, 8.5%, myopes, 9.5%, high myopes, 15.6%; <i>P</i> = .36). Myopia and high myopia were not associated with an increased risk of redetachment over time (hazard ratio, 1.01, <i>P</i> = .96; hazard ratio, 1.54, <i>P</i> = .35, respectively). Additionally, the incidence of redetachment was not significantly correlated with the time after cataract extraction (<i>P</i> = .33). A significant difference was observed between the incidence of redetachment and age (<i>P</i> = .003). Patients between 18 and 35 years experienced the highest incidence of redetachment within 1, 3, and 12 months after cataract extraction (5.26%, 7.02%, 7.02%, respectively). Such patients were overrepresented among those who underwent complex surgeries for initial phakic RRD repair (30-39 years, residual: 2.71; 40-49 years, residual: 3.32). <b>Conclusions:</b> Among patients with a phakic RRD, myopia did not significantly increase the risk of redetachment after cataract extraction. However, an upward trend was noted between the proportion of redetachments and the degree of myopia. Younger patients exhibited the highest incidence of redetachment and should be closely monitored after cataract extraction.