Effect Of Preoperative Factors On Postoperative Postoperative Visual Acuity Evaluation In Idiopathic Macular Membrane

Purpose:To analyse the influence of preoperative factors related to postoperative visual acuity evaluation in idiopathic macular epithelial membrane.Methods:Collection of 51 patients(51 eyes)with idiopathic macular epithelial membrane for surgery treatment in the affiliated hospital of Yanbian university from January 2015 to February 2017,and analysis of preoperative basic conditions,eye examination results,and recovery of eye and vision 1 year after surgery.According to 1 year postoperative BCVA results,they will be divided into 2 groups,high vision(BCVA ≥ 20/40)group and low vision(BCVA<20/40)group,and analysis of the correlation between preoperative factors and postoperative visual recovery.Referring Kauffmann’s scoring method and according to preoperative factors,preoperative idiopathic macular epiretinal membrane surgery score were designed for predicting preoperative assessment of visual acuity.Result:1.Postoperative results:postoperative BCVA was significantly higher than preoperation(P<0.05);and the central foveal thickness after operation was significantly lower than before surgery(P<0.05);comparing with macular OCT parameters,outer membrane disruption grading≥ 1 grade,IS/OS disruption grading ≥ 1 grade,results between before and after surgery was statistically significant(P<0.05);macular epithelial membrane morphology,vitreous traction,foveal folds,and foveal contours were no significant change before and after surgery(P>0.05).2.Univariate analysis:preoperative factors,such as age,disease duration,and preoperative BCVA in the two groups had significant difference(P<0.05).They also had significant differences in terms of external membrane and IS/OS connectivity of the preoperative macular OCT parameters(P<0.05),but there was no significant difference in preoperative macular membrane morphology between the two groups(P>0.05).3.Multifactor analysis:age,course of disease,preoperative BCVA,external membrane and IS/OS connection status were risk factors for low vision after surgery in both groups,and were closely related to postoperative visual recovery(P<0.05).4.Correlation analysis:with the increase of age and duration of disease,1 year postoperative BCVA acuity reaching≥20/40 gradually decreased after surgery(r=0.535,0.503,P=0.000,0.000);Preoperative high BCVA patients have higher visual in 1 year postoperative BCVA acuity of≥20/40(r=0.770,P=0.000);1 year postoperative BCVA gain is closely related to age,course of disease,and preoperative BVCA(r=0.533,0.628,0.391,P=0.000,0.001,0.018).5.Preoperative factor score results:with a score>5,patients had a more than 50%chance of recovering 20/40 final BCVA;when the score was≤5,1 year postoperative BCVA reaches≥20/40 chance of 33%or less;at a score of 10 points,1 year postoperative BCVA achieved a ≥20/40 chance of 89%.Conclusion:1 Patients with idiopathic macular membrane surgery gain better vision after surgery,Preoperative factors such as age,disease duration,preoperative BCVA,external membrane and IS/OS connection status are important factors affecting and evaluating postoperative visual acuity.2.Preoperative evaluation using preoperative scoring provides important reference for preoperative screening,timing of surgery,and evaluation of postoperative visual acuity,with good practicality and reliability.