Changes in Axial Length in Patients of Acute Retinal Necrosis Undergoing Vitrectomy

PURPOSE: To observe the changes in the axial length (AL) in patients of acute retinal necrosis (ARN) undergoing vitrectomy and investigate the correlated factors. METHODS: Retrospective case series. Patients diagnosed as ARN undergoing vitrectomy with silicone oil (SO) tamponade, and with attached retina more than one year after silicone oil removal (SOR) were included. Medical records and AL measured by Zeiss IOLMaster 700 were reviewed before vitrectomy, before SOR, and one year after SOR. Residual retinal index, a parameter reflecting the residual retinal area after vitrectomy was analyzed based on the ultra-wide-field fundus imaging. The AL change (ΔAL) was calculated and clinical factors related to ΔAL were investigated. RESULTS: = 0.006). CONCLUSION: For ARN patients undergoing vitrectomy, AL decreased significantly both post-vitrectomy and post-SOR. The refractive shift should be considered before intraocular lens implantation.