A Study on Improvement of Diplopia after Surgery for Orbital Floor Fracture

Abstract

　　We reviewed orbital floor fractures that were treated surgically at our department. A total of 22 subjects treated between 2014 to 2021, all of whom had undergone endoscopic endonasal repair surgery, were included in this study. The percent Hess area ratio (HAR%) and diplopia grade were assessed before and after the surgery as quantitative and qualitative measures of the surgery outcomes. We defined cure as follows: HAR%>85%, diplopia grade≤1. Cure within 3 months of the surgery was achieved in 73% of the patients, and within 6 months of the surgery in 85.7% of patients. None of the patients needed any additional surgeries. The preoperative HAR% and preoperative diplopia grade were identified as being statistically significantly associated with early cure, and preoperative HAR%<52% and diplopia grade 3 were identified as risk factors for preventing early cure. The results of the present study suggested that diplopia associated with orbital floor fracture improved at least to some degree within 3 months of surgery, but that healing was delayed in cases with severe diplopia prior to the surgery.