Epiretinal membranes are a disease of the retinal surface, that may affect visual acuity and cause metamorphopsia. Using vitrectomy with membrane peeling, postoperative improvement of visual acuity and metamorphopsia may be achieved in a majority of patients. Diaz et al. demonstrated that there are postoperative changes in the "nerve fiber layer" after ILM peeling, but in that study, no recording of instrument/tissue interactions was performed using iOCT. The aim of this study is to examine dipping into retinal tissue with the forceps during grasping of the epiretinal membrane at the starting point of peeling with iOCT.
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occurrence of dipping into retinal tissue with the ILM forceps during grasping
Timeframe: during surgery, an average of 30 minutes
amount of dipping into retinal tissue with the ILM forceps during grasping, measured with ImageJ
Timeframe: during surgery, an average of 30 minutes