Abstract: Abstract：Objective Correlation analysis among retinal deformation degree and retina thickness of macular fovea(RT) and visual acuity(BCVA) in idiopathic macular epiretinal membrane patients. Methods The 66 eyes(56 patients)with idiopathic epiretinal membrane were included in this study, all the patients had undergone examination of visual acuity(LogMAR chart)，ocular fundus and OCT,all patients were divided into three groups according to retinal deformation degree, the RT value was measured manually .Data were analyzed using SPSS 19.0. SNK tests were undergone on BCVA and RT among three groups;PEARSON tests were undergone between RT and BCVA respectivel in three groups. Results There was significant difference on RT among three groups(averages respectively were 311.95±51.78um, 447.13±41.95um and 560.00±58.23um),the same result on visual acuity in three groups(averages respectively were 0.78±0.16 , 0.38±0.12 and 0.27±0.14)( P＜0.05). Statistic analysis revealed that BCVA was not related to RT in light Group(P>0.05),but was related to RT in medium Group and serious group (P＜0.05)．Conclusion The retinal deformation degree and RT are two objective indicators to assessing visual performance of idiopathic macular epiretinal membrane patients, Operation should be took when RT is more than 400 μm.

Key words: macula lutea, retinal diseases, vision tests, idiopathic macular epiretinal membrane, optic coherent tomography, retina thickness