ABSTRACT
Purpose@#To investigate orbital morphology parameters associated with exophthalmos changes in patients undergoing endoscopic orbital decompression to treat thyroid-related orbitopathy. @*Methods@#In total, 33 eyes of 18 patients with thyroid-related orbitopathy who underwent endoscopic orbital decompression were included in this retrospective study. Data were collected before and 6 months after surgery. We performed Hertel exophthalmometry and derived orbital morphology parameters from two-dimensional facial computed tomography records. Parameters associated with exophthalmos reduction on univariate linear regression analysis were subjected to multivariate linear regression analyses. @*Results@#Univariate linear regression showed that the preoperative length of the medial orbital wall (β = 0.179, p = 0.032) and the postoperative distance from the cone apex to the medial wall defect (β = -0.139, p = 0.006) were associated with exophthalmos reduction after endoscopic orbital decompression surgery. Multivariate linear regression of these two parameters showed that the distance from the apex to the medial wall defect was associated with exophthalmos reduction (β = -0.118, p = 0.019). @*Conclusions@#The postoperative distance from the cone apex to the medial wall defect was associated with exophthalmos reduction. In patients with thyroid-related orbitopathy, this association should be considered when planning endoscopic orbital decompression.
ABSTRACT
Purpose@#We sought to predict how difficult surgical removal of an epiretinal membrane (ERM) might be by analyzing the preoperative characteristics of the ERM. @*Methods@#From 2016 to 2020, 75 patients diagnosed with idiopathic ERMs who underwent ERM removal were evaluated in terms of surgical time (via video analysis); associations between that time and preoperative color fundus photographs and optical coherence tomography findings were sought. @*Results@#The surgical time was associated with the vascular tortuosity grade, the ERM stage, and fibrillary changes (p = 0.024, p = 0.020, and p = 0.018). Dummy regression analysis showed that EMR stage 4, and vascular tortuosity grades of 2 or 3, increased the surgical time (p = 0.036, p = 0.049). @*Conclusions@#Surgery may be difficult if the ERM is of stage 4 or the vascular tortuosity grade 2 or more. A retinal surgery novice should consider these factors when contemplating surgery.
ABSTRACT
Purpose@#We sought to predict how difficult surgical removal of an epiretinal membrane (ERM) might be by analyzing the preoperative characteristics of the ERM. @*Methods@#From 2016 to 2020, 75 patients diagnosed with idiopathic ERMs who underwent ERM removal were evaluated in terms of surgical time (via video analysis); associations between that time and preoperative color fundus photographs and optical coherence tomography findings were sought. @*Results@#The surgical time was associated with the vascular tortuosity grade, the ERM stage, and fibrillary changes (p = 0.024, p = 0.020, and p = 0.018). Dummy regression analysis showed that EMR stage 4, and vascular tortuosity grades of 2 or 3, increased the surgical time (p = 0.036, p = 0.049). @*Conclusions@#Surgery may be difficult if the ERM is of stage 4 or the vascular tortuosity grade 2 or more. A retinal surgery novice should consider these factors when contemplating surgery.